Max Planck Institute for Radio Astronomy

Short name

MPIfRA

Country, city

Germany, Bonn

04jvemc39

Organization website

Publications

5 725

Citations

235 579

h-index

192

Top-3 journals

Astronomy and Astrophysics (1524 publications)

Astrophysical Journal (1016 publications)

Monthly Notices of the Royal Astronomical Society (981 publications)

Top-3 organizations

National Institute for Astrophysics (626 publications)

Center for Astrophysics | Harvard & Smithsonian (575 publications)

California Institute of Technology (564 publications)

Top-3 foreign organizations

National Institute for Astrophysics (626 publications)

Center for Astrophysics | Harvard & Smithsonian (575 publications)

California Institute of Technology (564 publications)

Publication title from chars

Publisher

Journal

Field of science

Countries

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Publications found: 0

Since 1967

Total publications

5725

Total citations

235579

Citations per publication

41.15

Average publications per year

98.71

Average authors per publication

12.59

h-index

192

Metrics description

h-index

A scientist has an h-index if h of his N publications are cited at least h times each, while the remaining (N - h) publications are cited no more than h times each.

https://www.pnas.org/doi/full/10.1073/pnas.0507655102

Top-30

Fields of science

	500 1000 1500 2000 2500 3000 3500 4000 4500 5000
Astronomy and Astrophysics	Astronomy and Astrophysics, 4677, 45.11% Astronomy and Astrophysics 4677 publications, 45.11%
Space and Planetary Science	Space and Planetary Science, 4530, 43.69% Space and Planetary Science 4530 publications, 43.69%
General Physics and Astronomy	General Physics and Astronomy, 175, 1.69% General Physics and Astronomy 175 publications, 1.69%
Multidisciplinary	Multidisciplinary, 160, 1.54% Multidisciplinary 160 publications, 1.54%
Electrical and Electronic Engineering	Electrical and Electronic Engineering, 74, 0.71% Electrical and Electronic Engineering 74 publications, 0.71%
General Engineering	General Engineering, 67, 0.65% General Engineering 67 publications, 0.65%
Condensed Matter Physics	Condensed Matter Physics, 59, 0.57% Condensed Matter Physics 59 publications, 0.57%
Atomic and Molecular Physics, and Optics	Atomic and Molecular Physics, and Optics, 58, 0.56% Atomic and Molecular Physics, and Optics 58 publications, 0.56%
Instrumentation	Instrumentation, 51, 0.49% Instrumentation 51 publications, 0.49%
General Medicine	General Medicine, 41, 0.4% General Medicine 41 publications, 0.4%
Physical and Theoretical Chemistry	Physical and Theoretical Chemistry, 40, 0.39% Physical and Theoretical Chemistry 40 publications, 0.39%
General Earth and Planetary Sciences	General Earth and Planetary Sciences, 37, 0.36% General Earth and Planetary Sciences 37 publications, 0.36%
Physics and Astronomy (miscellaneous)	Physics and Astronomy (miscellaneous), 35, 0.34% Physics and Astronomy (miscellaneous) 35 publications, 0.34%
Nuclear and High Energy Physics	Nuclear and High Energy Physics, 35, 0.34% Nuclear and High Energy Physics 35 publications, 0.34%
Geophysics	Geophysics, 34, 0.33% Geophysics 34 publications, 0.33%
Radiation	Radiation, 31, 0.3% Radiation 31 publications, 0.3%
Mathematical Physics	Mathematical Physics, 28, 0.27% Mathematical Physics 28 publications, 0.27%
Atmospheric Science	Atmospheric Science, 28, 0.27% Atmospheric Science 28 publications, 0.27%
Spectroscopy	Spectroscopy, 19, 0.18% Spectroscopy 19 publications, 0.18%
Aerospace Engineering	Aerospace Engineering, 17, 0.16% Aerospace Engineering 17 publications, 0.16%
Electronic, Optical and Magnetic Materials	Electronic, Optical and Magnetic Materials, 16, 0.15% Electronic, Optical and Magnetic Materials 16 publications, 0.15%
Earth and Planetary Sciences (miscellaneous)	Earth and Planetary Sciences (miscellaneous), 11, 0.11% Earth and Planetary Sciences (miscellaneous) 11 publications, 0.11%
General Biochemistry, Genetics and Molecular Biology	General Biochemistry, Genetics and Molecular Biology, 9, 0.09% General Biochemistry, Genetics and Molecular Biology 9 publications, 0.09%
General Environmental Science	General Environmental Science, 9, 0.09% General Environmental Science 9 publications, 0.09%
Geochemistry and Petrology	Geochemistry and Petrology, 8, 0.08% Geochemistry and Petrology 8 publications, 0.08%
History and Philosophy of Science	History and Philosophy of Science, 8, 0.08% History and Philosophy of Science 8 publications, 0.08%
General Chemistry	General Chemistry, 7, 0.07% General Chemistry 7 publications, 0.07%
General Neuroscience	General Neuroscience, 6, 0.06% General Neuroscience 6 publications, 0.06%
Ecology, Evolution, Behavior and Systematics	Ecology, Evolution, Behavior and Systematics, 6, 0.06% Ecology, Evolution, Behavior and Systematics 6 publications, 0.06%
Engineering (miscellaneous)	Engineering (miscellaneous), 6, 0.06% Engineering (miscellaneous) 6 publications, 0.06%
	500 1000 1500 2000 2500 3000 3500 4000 4500 5000

Journals

	200 400 600 800 1000 1200 1400 1600
Astronomy and Astrophysics	Astronomy and Astrophysics, 1524, 26.62% Astronomy and Astrophysics 1524 publications, 26.62%
Astrophysical Journal	Astrophysical Journal, 1016, 17.75% Astrophysical Journal 1016 publications, 17.75%
Monthly Notices of the Royal Astronomical Society	Monthly Notices of the Royal Astronomical Society, 981, 17.14% Monthly Notices of the Royal Astronomical Society 981 publications, 17.14%
Proceedings of the International Astronomical Union	Proceedings of the International Astronomical Union, 250, 4.37% Proceedings of the International Astronomical Union 250 publications, 4.37%
Astrophysical Journal Letters	Astrophysical Journal Letters, 144, 2.52% Astrophysical Journal Letters 144 publications, 2.52%
Proceedings of SPIE - The International Society for Optical Engineering	Proceedings of SPIE - The International Society for Optical Engineering, 136, 2.38% Proceedings of SPIE - The International Society for Optical Engineering 136 publications, 2.38%
Nature	Nature, 114, 1.99% Nature 114 publications, 1.99%
Astronomical Journal	Astronomical Journal, 101, 1.76% Astronomical Journal 101 publications, 1.76%
Astrophysics and Space Science Library	Astrophysics and Space Science Library, 72, 1.26% Astrophysics and Space Science Library 72 publications, 1.26%
Astrophysical Journal, Supplement Series	Astrophysical Journal, Supplement Series, 70, 1.22% Astrophysical Journal, Supplement Series 70 publications, 1.22%
Monthly Notices of the Royal Astronomical Society: Letters	Monthly Notices of the Royal Astronomical Society: Letters, 63, 1.1% Monthly Notices of the Royal Astronomical Society: Letters 63 publications, 1.1%
Journal of Physics: Conference Series	Journal of Physics: Conference Series, 59, 1.03% Journal of Physics: Conference Series 59 publications, 1.03%
Astrophysics and Space Science	Astrophysics and Space Science, 59, 1.03% Astrophysics and Space Science 59 publications, 1.03%
Galaxies	Galaxies, 48, 0.84% Galaxies 48 publications, 0.84%
Astronomische Nachrichten	Astronomische Nachrichten, 46, 0.8% Astronomische Nachrichten 46 publications, 0.8%
Publications of the Astronomical Society of Australia	Publications of the Astronomical Society of Australia, 45, 0.79% Publications of the Astronomical Society of Australia 45 publications, 0.79%
Nature Astronomy	Nature Astronomy, 44, 0.77% Nature Astronomy 44 publications, 0.77%
EAS Publications Series	EAS Publications Series, 40, 0.7% EAS Publications Series 40 publications, 0.7%
Science	Science, 36, 0.63% Science 36 publications, 0.63%
New Astronomy Reviews	New Astronomy Reviews, 32, 0.56% New Astronomy Reviews 32 publications, 0.56%
Physical Review D	Physical Review D, 29, 0.51% Physical Review D 29 publications, 0.51%
Astronomy and Astrophysics Supplement Series	Astronomy and Astrophysics Supplement Series, 29, 0.51% Astronomy and Astrophysics Supplement Series 29 publications, 0.51%
Astronomy and Astrophysics Library	Astronomy and Astrophysics Library, 28, 0.49% Astronomy and Astrophysics Library 28 publications, 0.49%
Solar Physics	Solar Physics, 25, 0.44% Solar Physics 25 publications, 0.44%
Journal of Cosmology and Astroparticle Physics	Journal of Cosmology and Astroparticle Physics, 20, 0.35% Journal of Cosmology and Astroparticle Physics 20 publications, 0.35%
EPJ Web of Conferences	EPJ Web of Conferences, 19, 0.33% EPJ Web of Conferences 19 publications, 0.33%
Publication of the Astronomical Society of Japan	Publication of the Astronomical Society of Japan, 18, 0.31% Publication of the Astronomical Society of Japan 18 publications, 0.31%
Red Giants as Probes of the Structure and Evolution of the Milky Way	Red Giants as Probes of the Structure and Evolution of the Milky Way, 18, 0.31% Red Giants as Probes of the Structure and Evolution of the Milky Way 18 publications, 0.31%
Astroparticle Physics	Astroparticle Physics, 17, 0.3% Astroparticle Physics 17 publications, 0.3%
Space Science Reviews	Space Science Reviews, 17, 0.3% Space Science Reviews 17 publications, 0.3%
	200 400 600 800 1000 1200 1400 1600

Publishers

	200 400 600 800 1000 1200 1400 1600 1800
EDP Sciences	EDP Sciences, 1612, 28.16% EDP Sciences 1612 publications, 28.16%
American Astronomical Society	American Astronomical Society, 1245, 21.75% American Astronomical Society 1245 publications, 21.75%
Oxford University Press	Oxford University Press, 1065, 18.6% Oxford University Press 1065 publications, 18.6%
Springer Nature	Springer Nature, 510, 8.91% Springer Nature 510 publications, 8.91%
Cambridge University Press	Cambridge University Press, 303, 5.29% Cambridge University Press 303 publications, 5.29%
IOP Publishing	IOP Publishing, 247, 4.31% IOP Publishing 247 publications, 4.31%
Elsevier	Elsevier, 165, 2.88% Elsevier 165 publications, 2.88%
SPIE-Intl Soc Optical Eng	SPIE-Intl Soc Optical Eng, 139, 2.43% SPIE-Intl Soc Optical Eng 139 publications, 2.43%
Wiley	Wiley, 68, 1.19% Wiley 68 publications, 1.19%
MDPI	MDPI, 66, 1.15% MDPI 66 publications, 1.15%
American Physical Society (APS)	American Physical Society (APS), 46, 0.8% American Physical Society (APS) 46 publications, 0.8%
American Association for the Advancement of Science (AAAS)	American Association for the Advancement of Science (AAAS), 41, 0.72% American Association for the Advancement of Science (AAAS) 41 publications, 0.72%
Institute of Electrical and Electronics Engineers (IEEE)	Institute of Electrical and Electronics Engineers (IEEE), 38, 0.66% Institute of Electrical and Electronics Engineers (IEEE) 38 publications, 0.66%
AIP Publishing	AIP Publishing, 35, 0.61% AIP Publishing 35 publications, 0.61%
Pleiades Publishing	Pleiades Publishing, 33, 0.58% Pleiades Publishing 33 publications, 0.58%
World Scientific	World Scientific, 23, 0.4% World Scientific 23 publications, 0.4%
Institution of Engineering and Technology (IET)	Institution of Engineering and Technology (IET), 17, 0.3% Institution of Engineering and Technology (IET) 17 publications, 0.3%
Optica Publishing Group	Optica Publishing Group, 15, 0.26% Optica Publishing Group 15 publications, 0.26%
Walter de Gruyter	Walter de Gruyter, 11, 0.19% Walter de Gruyter 11 publications, 0.19%
Science in China Press	Science in China Press, 7, 0.12% Science in China Press 7 publications, 0.12%
Taylor & Francis	Taylor & Francis, 6, 0.1% Taylor & Francis 6 publications, 0.1%
American Geophysical Union	American Geophysical Union, 5, 0.09% American Geophysical Union 5 publications, 0.09%
Annual Reviews	Annual Reviews, 5, 0.09% Annual Reviews 5 publications, 0.09%
Royal Society of Chemistry (RSC)	Royal Society of Chemistry (RSC), 4, 0.07% Royal Society of Chemistry (RSC) 4 publications, 0.07%
American Chemical Society (ACS)	American Chemical Society (ACS), 3, 0.05% American Chemical Society (ACS) 3 publications, 0.05%
The Royal Society	The Royal Society, 3, 0.05% The Royal Society 3 publications, 0.05%
Proceedings of the National Academy of Sciences (PNAS)	Proceedings of the National Academy of Sciences (PNAS), 2, 0.03% Proceedings of the National Academy of Sciences (PNAS) 2 publications, 0.03%
Frontiers Media S.A.	Frontiers Media S.A., 2, 0.03% Frontiers Media S.A. 2 publications, 0.03%
Uspekhi Fizicheskikh Nauk Journal	Uspekhi Fizicheskikh Nauk Journal, 2, 0.03% Uspekhi Fizicheskikh Nauk Journal 2 publications, 0.03%
Canadian Science Publishing	Canadian Science Publishing, 2, 0.03% Canadian Science Publishing 2 publications, 0.03%
	200 400 600 800 1000 1200 1400 1600 1800

With other organizations

	100 200 300 400 500 600 700
National Institute for Astrophysics	National Institute for Astrophysics, 626, 2.47% National Institute for Astrophysics 626 publications, 2.47%
Center for Astrophysics \| Harvard & Smithsonian	Center for Astrophysics \| Harvard & Smithsonian, 575, 2.27% Center for Astrophysics \| Harvard & Smithsonian 575 publications, 2.27%
California Institute of Technology	California Institute of Technology, 564, 2.23% California Institute of Technology 564 publications, 2.23%
University of Manchester	University of Manchester, 557, 2.2% University of Manchester 557 publications, 2.2%
Max Planck Institute for Astronomy	Max Planck Institute for Astronomy, 464, 1.83% Max Planck Institute for Astronomy 464 publications, 1.83%
University of Cologne	University of Cologne, 437, 1.73% University of Cologne 437 publications, 1.73%
Commonwealth Scientific and Industrial Research Organization	Commonwealth Scientific and Industrial Research Organization, 424, 1.68% Commonwealth Scientific and Industrial Research Organization 424 publications, 1.68%
Netherlands Institute for Radio Astronomy	Netherlands Institute for Radio Astronomy, 397, 1.57% Netherlands Institute for Radio Astronomy 397 publications, 1.57%
Rhenish Friedrich Wilhelm University of Bonn	Rhenish Friedrich Wilhelm University of Bonn, 384, 1.52% Rhenish Friedrich Wilhelm University of Bonn 384 publications, 1.52%
Observatoire de Paris	Observatoire de Paris, 382, 1.51% Observatoire de Paris 382 publications, 1.51%
Leiden University	Leiden University, 296, 1.17% Leiden University 296 publications, 1.17%
University of Arizona	University of Arizona, 252, 1% University of Arizona 252 publications, 1%
European Southern Observatory	European Southern Observatory, 252, 1% European Southern Observatory 252 publications, 1%
University of Amsterdam	University of Amsterdam, 247, 0.98% University of Amsterdam 247 publications, 0.98%
Astronomical Observatory of Cagliari	Astronomical Observatory of Cagliari, 244, 0.96% Astronomical Observatory of Cagliari 244 publications, 0.96%
Arcetri Astrophysical Observatory	Arcetri Astrophysical Observatory, 239, 0.94% Arcetri Astrophysical Observatory 239 publications, 0.94%
Radboud University Nijmegen	Radboud University Nijmegen, 230, 0.91% Radboud University Nijmegen 230 publications, 0.91%
Goddard Space Flight Center	Goddard Space Flight Center, 227, 0.9% Goddard Space Flight Center 227 publications, 0.9%
Jet Propulsion Laboratory	Jet Propulsion Laboratory, 222, 0.88% Jet Propulsion Laboratory 222 publications, 0.88%
National Astronomical Observatories, Chinese Academy of Sciences	National Astronomical Observatories, Chinese Academy of Sciences, 219, 0.87% National Astronomical Observatories, Chinese Academy of Sciences 219 publications, 0.87%
Paris Cité University	Paris Cité University, 209, 0.83% Paris Cité University 209 publications, 0.83%
Chalmers University of Technology	Chalmers University of Technology, 208, 0.82% Chalmers University of Technology 208 publications, 0.82%
Sorbonne University	Sorbonne University, 204, 0.81% Sorbonne University 204 publications, 0.81%
University of Maryland, College Park	University of Maryland, College Park, 200, 0.79% University of Maryland, College Park 200 publications, 0.79%
Swinburne University of Technology	Swinburne University of Technology, 193, 0.76% Swinburne University of Technology 193 publications, 0.76%
P.N. Lebedev Physical Institute of the Russian Academy of Sciences	P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 191, 0.75% P.N. Lebedev Physical Institute of the Russian Academy of Sciences 191 publications, 0.75%
National Astronomical Observatory of Japan	National Astronomical Observatory of Japan, 186, 0.74% National Astronomical Observatory of Japan 186 publications, 0.74%
Institute for Radio Astronomy of Bologna	Institute for Radio Astronomy of Bologna, 185, 0.73% Institute for Radio Astronomy of Bologna 185 publications, 0.73%
Cornell University	Cornell University, 184, 0.73% Cornell University 184 publications, 0.73%
University of California, Berkeley	University of California, Berkeley, 180, 0.71% University of California, Berkeley 180 publications, 0.71%
	100 200 300 400 500 600 700

With foreign organizations

	100 200 300 400 500 600 700
National Institute for Astrophysics	National Institute for Astrophysics, 626, 2.81% National Institute for Astrophysics 626 publications, 2.81%
Center for Astrophysics \| Harvard & Smithsonian	Center for Astrophysics \| Harvard & Smithsonian, 575, 2.58% Center for Astrophysics \| Harvard & Smithsonian 575 publications, 2.58%
California Institute of Technology	California Institute of Technology, 564, 2.53% California Institute of Technology 564 publications, 2.53%
University of Manchester	University of Manchester, 557, 2.5% University of Manchester 557 publications, 2.5%
Commonwealth Scientific and Industrial Research Organization	Commonwealth Scientific and Industrial Research Organization, 424, 1.9% Commonwealth Scientific and Industrial Research Organization 424 publications, 1.9%
Netherlands Institute for Radio Astronomy	Netherlands Institute for Radio Astronomy, 397, 1.78% Netherlands Institute for Radio Astronomy 397 publications, 1.78%
Observatoire de Paris	Observatoire de Paris, 382, 1.71% Observatoire de Paris 382 publications, 1.71%
Leiden University	Leiden University, 296, 1.33% Leiden University 296 publications, 1.33%
University of Arizona	University of Arizona, 252, 1.13% University of Arizona 252 publications, 1.13%
University of Amsterdam	University of Amsterdam, 247, 1.11% University of Amsterdam 247 publications, 1.11%
Astronomical Observatory of Cagliari	Astronomical Observatory of Cagliari, 244, 1.09% Astronomical Observatory of Cagliari 244 publications, 1.09%
Arcetri Astrophysical Observatory	Arcetri Astrophysical Observatory, 239, 1.07% Arcetri Astrophysical Observatory 239 publications, 1.07%
Radboud University Nijmegen	Radboud University Nijmegen, 230, 1.03% Radboud University Nijmegen 230 publications, 1.03%
Goddard Space Flight Center	Goddard Space Flight Center, 227, 1.02% Goddard Space Flight Center 227 publications, 1.02%
Jet Propulsion Laboratory	Jet Propulsion Laboratory, 222, 1% Jet Propulsion Laboratory 222 publications, 1%
National Astronomical Observatories, Chinese Academy of Sciences	National Astronomical Observatories, Chinese Academy of Sciences, 219, 0.98% National Astronomical Observatories, Chinese Academy of Sciences 219 publications, 0.98%
Paris Cité University	Paris Cité University, 209, 0.94% Paris Cité University 209 publications, 0.94%
Chalmers University of Technology	Chalmers University of Technology, 208, 0.93% Chalmers University of Technology 208 publications, 0.93%
Sorbonne University	Sorbonne University, 204, 0.91% Sorbonne University 204 publications, 0.91%
University of Maryland, College Park	University of Maryland, College Park, 200, 0.9% University of Maryland, College Park 200 publications, 0.9%
Swinburne University of Technology	Swinburne University of Technology, 193, 0.87% Swinburne University of Technology 193 publications, 0.87%
P.N. Lebedev Physical Institute of the Russian Academy of Sciences	P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 191, 0.86% P.N. Lebedev Physical Institute of the Russian Academy of Sciences 191 publications, 0.86%
National Astronomical Observatory of Japan	National Astronomical Observatory of Japan, 186, 0.83% National Astronomical Observatory of Japan 186 publications, 0.83%
Institute for Radio Astronomy of Bologna	Institute for Radio Astronomy of Bologna, 185, 0.83% Institute for Radio Astronomy of Bologna 185 publications, 0.83%
Cornell University	Cornell University, 184, 0.82% Cornell University 184 publications, 0.82%
University of California, Berkeley	University of California, Berkeley, 180, 0.81% University of California, Berkeley 180 publications, 0.81%
National Autonomous University of Mexico	National Autonomous University of Mexico, 180, 0.81% National Autonomous University of Mexico 180 publications, 0.81%
University of British Columbia	University of British Columbia, 175, 0.78% University of British Columbia 175 publications, 0.78%
West Virginia University	West Virginia University, 172, 0.77% West Virginia University 172 publications, 0.77%
Paris Sciences et Lettres	Paris Sciences et Lettres, 164, 0.74% Paris Sciences et Lettres 164 publications, 0.74%
	100 200 300 400 500 600 700

With other countries

	500 1000 1500 2000 2500 3000
USA	USA, 2799, 13.48% USA 2799 publications, 13.48%
United Kingdom	United Kingdom, 1395, 6.72% United Kingdom 1395 publications, 6.72%
France	France, 1155, 5.56% France 1155 publications, 5.56%
Netherlands	Netherlands, 1026, 4.94% Netherlands 1026 publications, 4.94%
Italy	Italy, 960, 4.62% Italy 960 publications, 4.62%
Australia	Australia, 763, 3.68% Australia 763 publications, 3.68%
China	China, 760, 3.66% China 760 publications, 3.66%
Spain	Spain, 753, 3.63% Spain 753 publications, 3.63%
Canada	Canada, 695, 3.35% Canada 695 publications, 3.35%
Chile	Chile, 500, 2.41% Chile 500 publications, 2.41%
Russia	Russia, 457, 2.2% Russia 457 publications, 2.2%
Japan	Japan, 386, 1.86% Japan 386 publications, 1.86%
Sweden	Sweden, 286, 1.38% Sweden 286 publications, 1.38%
Mexico	Mexico, 258, 1.24% Mexico 258 publications, 1.24%
South Africa	South Africa, 252, 1.21% South Africa 252 publications, 1.21%
Poland	Poland, 246, 1.19% Poland 246 publications, 1.19%
India	India, 227, 1.09% India 227 publications, 1.09%
Finland	Finland, 178, 0.86% Finland 178 publications, 0.86%
Republic of Korea	Republic of Korea, 158, 0.76% Republic of Korea 158 publications, 0.76%
Saudi Arabia	Saudi Arabia, 158, 0.76% Saudi Arabia 158 publications, 0.76%
Belgium	Belgium, 131, 0.63% Belgium 131 publications, 0.63%
Greece	Greece, 129, 0.62% Greece 129 publications, 0.62%
Switzerland	Switzerland, 108, 0.52% Switzerland 108 publications, 0.52%
Czech Republic	Czech Republic, 107, 0.52% Czech Republic 107 publications, 0.52%
Denmark	Denmark, 106, 0.51% Denmark 106 publications, 0.51%
Ireland	Ireland, 105, 0.51% Ireland 105 publications, 0.51%
Brazil	Brazil, 96, 0.46% Brazil 96 publications, 0.46%
Hungary	Hungary, 94, 0.45% Hungary 94 publications, 0.45%
Portugal	Portugal, 70, 0.34% Portugal 70 publications, 0.34%
	500 1000 1500 2000 2500 3000

We do not take into account publications without a DOI.
Statistics recalculated daily.
Publications published earlier than 1967 are ignored in the statistics.
The horizontal charts show the 30 top positions.
Journals quartiles values are relevant at the moment.