Ferdinand-Braun-Institute, Leibniz-Institut für Höchstfrequenztechnik

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Ferdinand-Braun-Institute, Leibniz-Institut für Höchstfrequenztechnik

Short name

FBH

Country, city

Germany, Berlin

02be22443

Organization website

Publications

1 742

Citations

33 816

h-index

Top-3 journals

Proceedings of SPIE - The International Society for Optical Engineering (206 publications)

Applied Physics Letters (111 publications)

Journal of Crystal Growth (108 publications)

Top-3 organizations

Technical University of Berlin (255 publications)

Humboldt University of Berlin (170 publications)

Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy (71 publications)

Top-3 foreign organizations

Technical University of Denmark (45 publications)

University of Padua (21 publications)

University of Strathclyde (15 publications)

Most cited in 5 years

Found

Publication title

Publisher

Journal

Countries

Found

Since 1992

Total publications

1742

Total citations

33816

Citations per publication

19.41

Average publications per year

49.77

Average authors per publication

8.15

h-index

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

	100 200 300 400 500 600 700
Electrical and Electronic Engineering	Electrical and Electronic Engineering, 601, 34.5% Electrical and Electronic Engineering 601 publications, 34.5%
Condensed Matter Physics	Condensed Matter Physics, 544, 31.23% Condensed Matter Physics 544 publications, 31.23%
Electronic, Optical and Magnetic Materials	Electronic, Optical and Magnetic Materials, 415, 23.82% Electronic, Optical and Magnetic Materials 415 publications, 23.82%
Atomic and Molecular Physics, and Optics	Atomic and Molecular Physics, and Optics, 362, 20.78% Atomic and Molecular Physics, and Optics 362 publications, 20.78%
Materials Chemistry	Materials Chemistry, 258, 14.81% Materials Chemistry 258 publications, 14.81%
Physics and Astronomy (miscellaneous)	Physics and Astronomy (miscellaneous), 142, 8.15% Physics and Astronomy (miscellaneous) 142 publications, 8.15%
General Physics and Astronomy	General Physics and Astronomy, 131, 7.52% General Physics and Astronomy 131 publications, 7.52%
Inorganic Chemistry	Inorganic Chemistry, 110, 6.31% Inorganic Chemistry 110 publications, 6.31%
Surfaces, Coatings and Films	Surfaces, Coatings and Films, 103, 5.91% Surfaces, Coatings and Films 103 publications, 5.91%
General Engineering	General Engineering, 75, 4.31% General Engineering 75 publications, 4.31%
General Materials Science	General Materials Science, 66, 3.79% General Materials Science 66 publications, 3.79%
Surfaces and Interfaces	Surfaces and Interfaces, 66, 3.79% Surfaces and Interfaces 66 publications, 3.79%
Radiation	Radiation, 64, 3.67% Radiation 64 publications, 3.67%
Instrumentation	Instrumentation, 37, 2.12% Instrumentation 37 publications, 2.12%
General Chemistry	General Chemistry, 30, 1.72% General Chemistry 30 publications, 1.72%
Mechanical Engineering	Mechanical Engineering, 25, 1.44% Mechanical Engineering 25 publications, 1.44%
Mechanics of Materials	Mechanics of Materials, 25, 1.44% Mechanics of Materials 25 publications, 1.44%
Safety, Risk, Reliability and Quality	Safety, Risk, Reliability and Quality, 19, 1.09% Safety, Risk, Reliability and Quality 19 publications, 1.09%
Physical and Theoretical Chemistry	Physical and Theoretical Chemistry, 18, 1.03% Physical and Theoretical Chemistry 18 publications, 1.03%
Spectroscopy	Spectroscopy, 17, 0.98% Spectroscopy 17 publications, 0.98%
Engineering (miscellaneous)	Engineering (miscellaneous), 17, 0.98% Engineering (miscellaneous) 17 publications, 0.98%
General Medicine	General Medicine, 14, 0.8% General Medicine 14 publications, 0.8%
Multidisciplinary	Multidisciplinary, 12, 0.69% Multidisciplinary 12 publications, 0.69%
Metals and Alloys	Metals and Alloys, 11, 0.63% Metals and Alloys 11 publications, 0.63%
Nuclear and High Energy Physics	Nuclear and High Energy Physics, 11, 0.63% Nuclear and High Energy Physics 11 publications, 0.63%
Biochemistry	Biochemistry, 10, 0.57% Biochemistry 10 publications, 0.57%
Industrial and Manufacturing Engineering	Industrial and Manufacturing Engineering, 10, 0.57% Industrial and Manufacturing Engineering 10 publications, 0.57%
Computer Science Applications	Computer Science Applications, 8, 0.46% Computer Science Applications 8 publications, 0.46%
Acoustics and Ultrasonics	Acoustics and Ultrasonics, 8, 0.46% Acoustics and Ultrasonics 8 publications, 0.46%
General Earth and Planetary Sciences	General Earth and Planetary Sciences, 8, 0.46% General Earth and Planetary Sciences 8 publications, 0.46%
	100 200 300 400 500 600 700

Journals

	50 100 150 200 250
Proceedings of SPIE - The International Society for Optical Engineering	Proceedings of SPIE - The International Society for Optical Engineering, 206, 11.83% Proceedings of SPIE - The International Society for Optical Engineering 206 publications, 11.83%
Applied Physics Letters	Applied Physics Letters, 111, 6.37% Applied Physics Letters 111 publications, 6.37%
Journal of Crystal Growth	Journal of Crystal Growth, 108, 6.2% Journal of Crystal Growth 108 publications, 6.2%
IEEE Photonics Technology Letters	IEEE Photonics Technology Letters, 79, 4.54% IEEE Photonics Technology Letters 79 publications, 4.54%
Semiconductor Science and Technology	Semiconductor Science and Technology, 66, 3.79% Semiconductor Science and Technology 66 publications, 3.79%
Journal of Applied Physics	Journal of Applied Physics, 57, 3.27% Journal of Applied Physics 57 publications, 3.27%
Electronics Letters	Electronics Letters, 57, 3.27% Electronics Letters 57 publications, 3.27%
Physica Status Solidi (A) Applications and Materials Science	Physica Status Solidi (A) Applications and Materials Science, 53, 3.04% Physica Status Solidi (A) Applications and Materials Science 53 publications, 3.04%
IEEE Transactions on Microwave Theory and Techniques	IEEE Transactions on Microwave Theory and Techniques, 52, 2.99% IEEE Transactions on Microwave Theory and Techniques 52 publications, 2.99%
Optics Letters	Optics Letters, 44, 2.53% Optics Letters 44 publications, 2.53%
Optics Express	Optics Express, 44, 2.53% Optics Express 44 publications, 2.53%
IEEE Journal of Selected Topics in Quantum Electronics	IEEE Journal of Selected Topics in Quantum Electronics, 39, 2.24% IEEE Journal of Selected Topics in Quantum Electronics 39 publications, 2.24%
physica status solidi (c)	physica status solidi (c), 38, 2.18% physica status solidi (c) 38 publications, 2.18%
IEEE Transactions on Electron Devices	IEEE Transactions on Electron Devices, 28, 1.61% IEEE Transactions on Electron Devices 28 publications, 1.61%
Applied Physics B: Lasers and Optics	Applied Physics B: Lasers and Optics, 27, 1.55% Applied Physics B: Lasers and Optics 27 publications, 1.55%
IEEE Journal of Quantum Electronics	IEEE Journal of Quantum Electronics, 25, 1.44% IEEE Journal of Quantum Electronics 25 publications, 1.44%
Physica Status Solidi (B): Basic Research	Physica Status Solidi (B): Basic Research, 24, 1.38% Physica Status Solidi (B): Basic Research 24 publications, 1.38%
Applied Optics	Applied Optics, 22, 1.26% Applied Optics 22 publications, 1.26%
International Journal of Microwave and Wireless Technologies	International Journal of Microwave and Wireless Technologies, 21, 1.21% International Journal of Microwave and Wireless Technologies 21 publications, 1.21%
Microelectronics Reliability	Microelectronics Reliability, 18, 1.03% Microelectronics Reliability 18 publications, 1.03%
Journal of Electronic Materials	Journal of Electronic Materials, 18, 1.03% Journal of Electronic Materials 18 publications, 1.03%
Physical Review B	Physical Review B, 17, 0.98% Physical Review B 17 publications, 0.98%
Optical and Quantum Electronics	Optical and Quantum Electronics, 16, 0.92% Optical and Quantum Electronics 16 publications, 0.92%
Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes	Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes, 14, 0.8% Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes 14 publications, 0.8%
IEEE Electron Device Letters	IEEE Electron Device Letters, 14, 0.8% IEEE Electron Device Letters 14 publications, 0.8%
Scientific Reports	Scientific Reports, 14, 0.8% Scientific Reports 14 publications, 0.8%
IEEE Microwave and Wireless Components Letters	IEEE Microwave and Wireless Components Letters, 13, 0.75% IEEE Microwave and Wireless Components Letters 13 publications, 0.75%
Materials Science and Engineering B: Solid-State Materials for Advanced Technology	Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 12, 0.69% Materials Science and Engineering B: Solid-State Materials for Advanced Technology 12 publications, 0.69%
phys stat sol (a)	phys stat sol (a), 12, 0.69% phys stat sol (a) 12 publications, 0.69%
MRS Proceedings	MRS Proceedings, 11, 0.63% MRS Proceedings 11 publications, 0.63%
	50 100 150 200 250

Publishers

	50 100 150 200 250 300
Institute of Electrical and Electronics Engineers (IEEE)	Institute of Electrical and Electronics Engineers (IEEE), 300, 17.22% Institute of Electrical and Electronics Engineers (IEEE) 300 publications, 17.22%
Elsevier	Elsevier, 213, 12.23% Elsevier 213 publications, 12.23%
SPIE-Intl Soc Optical Eng	SPIE-Intl Soc Optical Eng, 207, 11.88% SPIE-Intl Soc Optical Eng 207 publications, 11.88%
Wiley	Wiley, 197, 11.31% Wiley 197 publications, 11.31%
AIP Publishing	AIP Publishing, 177, 10.16% AIP Publishing 177 publications, 10.16%
Springer Nature	Springer Nature, 169, 9.7% Springer Nature 169 publications, 9.7%
Optica Publishing Group	Optica Publishing Group, 130, 7.46% Optica Publishing Group 130 publications, 7.46%
IOP Publishing	IOP Publishing, 117, 6.72% IOP Publishing 117 publications, 6.72%
Institution of Engineering and Technology (IET)	Institution of Engineering and Technology (IET), 71, 4.08% Institution of Engineering and Technology (IET) 71 publications, 4.08%
American Physical Society (APS)	American Physical Society (APS), 29, 1.66% American Physical Society (APS) 29 publications, 1.66%
Cambridge University Press	Cambridge University Press, 25, 1.44% Cambridge University Press 25 publications, 1.44%
American Chemical Society (ACS)	American Chemical Society (ACS), 16, 0.92% American Chemical Society (ACS) 16 publications, 0.92%
MDPI	MDPI, 15, 0.86% MDPI 15 publications, 0.86%
Japan Society of Applied Physics	Japan Society of Applied Physics, 15, 0.86% Japan Society of Applied Physics 15 publications, 0.86%
American Vacuum Society	American Vacuum Society, 11, 0.63% American Vacuum Society 11 publications, 0.63%
The Electrochemical Society	The Electrochemical Society, 10, 0.57% The Electrochemical Society 10 publications, 0.57%
SAGE	SAGE, 7, 0.4% SAGE 7 publications, 0.4%
Walter de Gruyter	Walter de Gruyter, 4, 0.23% Walter de Gruyter 4 publications, 0.23%
Oxford University Press	Oxford University Press, 4, 0.23% Oxford University Press 4 publications, 0.23%
Royal Society of Chemistry (RSC)	Royal Society of Chemistry (RSC), 4, 0.23% Royal Society of Chemistry (RSC) 4 publications, 0.23%
Taylor & Francis	Taylor & Francis, 3, 0.17% Taylor & Francis 3 publications, 0.17%
World Scientific	World Scientific, 3, 0.17% World Scientific 3 publications, 0.17%
Emerald	Emerald, 2, 0.11% Emerald 2 publications, 0.11%
EDP Sciences	EDP Sciences, 2, 0.11% EDP Sciences 2 publications, 0.11%
Pleiades Publishing	Pleiades Publishing, 2, 0.11% Pleiades Publishing 2 publications, 0.11%
Copernicus	Copernicus, 2, 0.11% Copernicus 2 publications, 0.11%
Beilstein-Institut	Beilstein-Institut, 2, 0.11% Beilstein-Institut 2 publications, 0.11%
Trans Tech Publications	Trans Tech Publications, 1, 0.06% Trans Tech Publications 1 publication, 0.06%
Vilnius Gediminas Technical University	Vilnius Gediminas Technical University, 1, 0.06% Vilnius Gediminas Technical University 1 publication, 0.06%
Hindawi Limited	Hindawi Limited, 1, 0.06% Hindawi Limited 1 publication, 0.06%
	50 100 150 200 250 300

With other organizations

	50 100 150 200 250 300
Technical University of Berlin	Technical University of Berlin, 255, 14.64% Technical University of Berlin 255 publications, 14.64%
Humboldt University of Berlin	Humboldt University of Berlin, 170, 9.76% Humboldt University of Berlin 170 publications, 9.76%
Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy	Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, 71, 4.08% Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy 71 publications, 4.08%
Leibniz Institute for Crystal Growth	Leibniz Institute for Crystal Growth, 46, 2.64% Leibniz Institute for Crystal Growth 46 publications, 2.64%
Technical University of Denmark	Technical University of Denmark, 45, 2.58% Technical University of Denmark 45 publications, 2.58%
Ruhr University Bochum	Ruhr University Bochum, 37, 2.12% Ruhr University Bochum 37 publications, 2.12%
Weierstrass Institute for Applied Analysis and Stochastics	Weierstrass Institute for Applied Analysis and Stochastics, 36, 2.07% Weierstrass Institute for Applied Analysis and Stochastics 36 publications, 2.07%
Helmholtz Centre for Materials and Energy	Helmholtz Centre for Materials and Energy, 29, 1.66% Helmholtz Centre for Materials and Energy 29 publications, 1.66%
Brandenburg University of Technology Cottbus–Senftenberg	Brandenburg University of Technology Cottbus–Senftenberg, 26, 1.49% Brandenburg University of Technology Cottbus–Senftenberg 26 publications, 1.49%
University of Bremen	University of Bremen, 24, 1.38% University of Bremen 24 publications, 1.38%
Hamburg University	Hamburg University, 23, 1.32% Hamburg University 23 publications, 1.32%
Federal Institute For Materials Research and Testing	Federal Institute For Materials Research and Testing, 23, 1.32% Federal Institute For Materials Research and Testing 23 publications, 1.32%
Free University of Berlin	Free University of Berlin, 21, 1.21% Free University of Berlin 21 publications, 1.21%
University of Padua	University of Padua, 21, 1.21% University of Padua 21 publications, 1.21%
Fraunhofer Institute for Applied Solid State Physics	Fraunhofer Institute for Applied Solid State Physics, 20, 1.15% Fraunhofer Institute for Applied Solid State Physics 20 publications, 1.15%
University of Potsdam	University of Potsdam, 19, 1.09% University of Potsdam 19 publications, 1.09%
Albert Ludwig University of Freiburg	Albert Ludwig University of Freiburg, 18, 1.03% Albert Ludwig University of Freiburg 18 publications, 1.03%
University of Erlangen–Nuremberg	University of Erlangen–Nuremberg, 18, 1.03% University of Erlangen–Nuremberg 18 publications, 1.03%
German Aerospace Center	German Aerospace Center, 18, 1.03% German Aerospace Center 18 publications, 1.03%
Otto-von-Guericke University Magdeburg	Otto-von-Guericke University Magdeburg, 17, 0.98% Otto-von-Guericke University Magdeburg 17 publications, 0.98%
Leibniz University Hannover	Leibniz University Hannover, 16, 0.92% Leibniz University Hannover 16 publications, 0.92%
Charité - Universitätsmedizin Berlin	Charité - Universitätsmedizin Berlin, 16, 0.92% Charité - Universitätsmedizin Berlin 16 publications, 0.92%
Goethe University Frankfurt	Goethe University Frankfurt, 16, 0.92% Goethe University Frankfurt 16 publications, 0.92%
University of Strathclyde	University of Strathclyde, 15, 0.86% University of Strathclyde 15 publications, 0.86%
Ulm University	Ulm University, 14, 0.8% Ulm University 14 publications, 0.8%
University College Cork (National University of Ireland, Cork)	University College Cork (National University of Ireland, Cork), 14, 0.8% University College Cork (National University of Ireland, Cork) 14 publications, 0.8%
Vilnius University	Vilnius University, 14, 0.8% Vilnius University 14 publications, 0.8%
University of Arkansas at Fayetteville	University of Arkansas at Fayetteville, 13, 0.75% University of Arkansas at Fayetteville 13 publications, 0.75%
Technical University of Darmstadt	Technical University of Darmstadt, 12, 0.69% Technical University of Darmstadt 12 publications, 0.69%
Technical University of Munich	Technical University of Munich, 11, 0.63% Technical University of Munich 11 publications, 0.63%
	50 100 150 200 250 300

With foreign organizations

	5 10 15 20 25 30 35 40 45
Technical University of Denmark	Technical University of Denmark, 45, 2.58% Technical University of Denmark 45 publications, 2.58%
University of Padua	University of Padua, 21, 1.21% University of Padua 21 publications, 1.21%
University of Strathclyde	University of Strathclyde, 15, 0.86% University of Strathclyde 15 publications, 0.86%
University College Cork (National University of Ireland, Cork)	University College Cork (National University of Ireland, Cork), 14, 0.8% University College Cork (National University of Ireland, Cork) 14 publications, 0.8%
Vilnius University	Vilnius University, 14, 0.8% Vilnius University 14 publications, 0.8%
University of Arkansas at Fayetteville	University of Arkansas at Fayetteville, 13, 0.75% University of Arkansas at Fayetteville 13 publications, 0.75%
Chalmers University of Technology	Chalmers University of Technology, 11, 0.63% Chalmers University of Technology 11 publications, 0.63%
National Yang Ming Chiao Tung University	National Yang Ming Chiao Tung University, 11, 0.63% National Yang Ming Chiao Tung University 11 publications, 0.63%
Université Paris-Saclay	Université Paris-Saclay, 11, 0.63% Université Paris-Saclay 11 publications, 0.63%
University of Nottingham	University of Nottingham, 10, 0.57% University of Nottingham 10 publications, 0.57%
Rutherford Appleton Laboratory	Rutherford Appleton Laboratory, 10, 0.57% Rutherford Appleton Laboratory 10 publications, 0.57%
Universidad Politécnica de Madrid	Universidad Politécnica de Madrid, 10, 0.57% Universidad Politécnica de Madrid 10 publications, 0.57%
Institute of Electrical Engineering of the Slovak Academy of Sciences	Institute of Electrical Engineering of the Slovak Academy of Sciences, 10, 0.57% Institute of Electrical Engineering of the Slovak Academy of Sciences 10 publications, 0.57%
Lund University	Lund University, 8, 0.46% Lund University 8 publications, 0.46%
ETH Zurich	ETH Zurich, 8, 0.46% ETH Zurich 8 publications, 0.46%
Sapienza University of Rome	Sapienza University of Rome, 8, 0.46% Sapienza University of Rome 8 publications, 0.46%
Swiss Federal Laboratories for Materials Science and Technology	Swiss Federal Laboratories for Materials Science and Technology, 8, 0.46% Swiss Federal Laboratories for Materials Science and Technology 8 publications, 0.46%
Sorbonne University	Sorbonne University, 8, 0.46% Sorbonne University 8 publications, 0.46%
Vienna University of Technology	Vienna University of Technology, 8, 0.46% Vienna University of Technology 8 publications, 0.46%
Institute of High Pressure Physics of the Polish Academy of Sciences	Institute of High Pressure Physics of the Polish Academy of Sciences, 8, 0.46% Institute of High Pressure Physics of the Polish Academy of Sciences 8 publications, 0.46%
Technical University of Moldova	Technical University of Moldova, 8, 0.46% Technical University of Moldova 8 publications, 0.46%
P.N. Lebedev Physical Institute of the Russian Academy of Sciences	P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 7, 0.4% P.N. Lebedev Physical Institute of the Russian Academy of Sciences 7 publications, 0.4%
University of Lisbon	University of Lisbon, 7, 0.4% University of Lisbon 7 publications, 0.4%
National Taiwan University	National Taiwan University, 7, 0.4% National Taiwan University 7 publications, 0.4%
University of Rome Tor Vergata	University of Rome Tor Vergata, 7, 0.4% University of Rome Tor Vergata 7 publications, 0.4%
National Institute for Nuclear Physics	National Institute for Nuclear Physics, 7, 0.4% National Institute for Nuclear Physics 7 publications, 0.4%
Nagoya University	Nagoya University, 7, 0.4% Nagoya University 7 publications, 0.4%
Université de Lille	Université de Lille, 7, 0.4% Université de Lille 7 publications, 0.4%
Ioffe Physical-Technical Institute of the Russian Academy of Sciences	Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 6, 0.34% Ioffe Physical-Technical Institute of the Russian Academy of Sciences 6 publications, 0.34%
Ghent University	Ghent University, 6, 0.34% Ghent University 6 publications, 0.34%
	5 10 15 20 25 30 35 40 45

With other countries

	10 20 30 40 50 60 70 80 90 100
USA	USA, 92, 5.28% USA 92 publications, 5.28%
Denmark	Denmark, 57, 3.27% Denmark 57 publications, 3.27%
United Kingdom	United Kingdom, 54, 3.1% United Kingdom 54 publications, 3.1%
Italy	Italy, 42, 2.41% Italy 42 publications, 2.41%
France	France, 37, 2.12% France 37 publications, 2.12%
Russia	Russia, 28, 1.61% Russia 28 publications, 1.61%
Spain	Spain, 28, 1.61% Spain 28 publications, 1.61%
Switzerland	Switzerland, 28, 1.61% Switzerland 28 publications, 1.61%
Sweden	Sweden, 25, 1.44% Sweden 25 publications, 1.44%
China	China, 21, 1.21% China 21 publications, 1.21%
Austria	Austria, 21, 1.21% Austria 21 publications, 1.21%
Poland	Poland, 20, 1.15% Poland 20 publications, 1.15%
Japan	Japan, 17, 0.98% Japan 17 publications, 0.98%
Ireland	Ireland, 16, 0.92% Ireland 16 publications, 0.92%
Netherlands	Netherlands, 14, 0.8% Netherlands 14 publications, 0.8%
Lithuania	Lithuania, 13, 0.75% Lithuania 13 publications, 0.75%
Australia	Australia, 12, 0.69% Australia 12 publications, 0.69%
Republic of Korea	Republic of Korea, 12, 0.69% Republic of Korea 12 publications, 0.69%
Belgium	Belgium, 11, 0.63% Belgium 11 publications, 0.63%
Slovakia	Slovakia, 11, 0.63% Slovakia 11 publications, 0.63%
India	India, 10, 0.57% India 10 publications, 0.57%
Portugal	Portugal, 9, 0.52% Portugal 9 publications, 0.52%
Czech Republic	Czech Republic, 9, 0.52% Czech Republic 9 publications, 0.52%
Canada	Canada, 8, 0.46% Canada 8 publications, 0.46%
Moldova	Moldova, 8, 0.46% Moldova 8 publications, 0.46%
Vietnam	Vietnam, 7, 0.4% Vietnam 7 publications, 0.4%
Israel	Israel, 7, 0.4% Israel 7 publications, 0.4%
Turkey	Turkey, 6, 0.34% Turkey 6 publications, 0.34%
Finland	Finland, 6, 0.34% Finland 6 publications, 0.34%
	10 20 30 40 50 60 70 80 90 100

We do not take into account publications without a DOI.
Statistics recalculated daily.
Publications published earlier than 1992 are ignored in the statistics.
The horizontal charts show the 30 top positions.
Journals quartiles values are relevant at the moment.