Institute for Technical Physics and Materials Science

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Institute for Technical Physics and Materials Science

Short name

MKA

Country, city

Hungary, Budapest

03ftngr23

Organization website

Publications

2 414

Citations

67 081

h-index

109

Top-3 journals

Physical Review E (124 publications)

Applied Surface Science (93 publications)

Thin Solid Films (81 publications)

Top-3 organizations

Budapest University of Technology and Economics (278 publications)

HUN-REN Research Centre for Natural Sciences (274 publications)

Eötvös Loránd University (University of Budapest) (213 publications)

Top-3 foreign organizations

University of Maribor (70 publications)

Linköping University (59 publications)

University of Electronic Science and Technology of China (42 publications)

Most cited in 5 years

Found

Publication title

Publisher

Journal

Countries

Found

Since 1991

Total publications

2414

Total citations

67081

Citations per publication

27.79

Average publications per year

67.06

Average authors per publication

5.9

h-index

109

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

	100 200 300 400 500 600 700 800
Condensed Matter Physics	Condensed Matter Physics, 774, 32.06% Condensed Matter Physics 774 publications, 32.06%
Surfaces, Coatings and Films	Surfaces, Coatings and Films, 437, 18.1% Surfaces, Coatings and Films 437 publications, 18.1%
Electronic, Optical and Magnetic Materials	Electronic, Optical and Magnetic Materials, 436, 18.06% Electronic, Optical and Magnetic Materials 436 publications, 18.06%
General Materials Science	General Materials Science, 401, 16.61% General Materials Science 401 publications, 16.61%
Materials Chemistry	Materials Chemistry, 347, 14.37% Materials Chemistry 347 publications, 14.37%
General Physics and Astronomy	General Physics and Astronomy, 320, 13.26% General Physics and Astronomy 320 publications, 13.26%
General Chemistry	General Chemistry, 313, 12.97% General Chemistry 313 publications, 12.97%
Surfaces and Interfaces	Surfaces and Interfaces, 293, 12.14% Surfaces and Interfaces 293 publications, 12.14%
Mechanical Engineering	Mechanical Engineering, 262, 10.85% Mechanical Engineering 262 publications, 10.85%
Metals and Alloys	Metals and Alloys, 222, 9.2% Metals and Alloys 222 publications, 9.2%
Electrical and Electronic Engineering	Electrical and Electronic Engineering, 194, 8.04% Electrical and Electronic Engineering 194 publications, 8.04%
Mechanics of Materials	Mechanics of Materials, 185, 7.66% Mechanics of Materials 185 publications, 7.66%
Instrumentation	Instrumentation, 182, 7.54% Instrumentation 182 publications, 7.54%
Atomic and Molecular Physics, and Optics	Atomic and Molecular Physics, and Optics, 109, 4.52% Atomic and Molecular Physics, and Optics 109 publications, 4.52%
Physical and Theoretical Chemistry	Physical and Theoretical Chemistry, 89, 3.69% Physical and Theoretical Chemistry 89 publications, 3.69%
Multidisciplinary	Multidisciplinary, 78, 3.23% Multidisciplinary 78 publications, 3.23%
Industrial and Manufacturing Engineering	Industrial and Manufacturing Engineering, 75, 3.11% Industrial and Manufacturing Engineering 75 publications, 3.11%
General Medicine	General Medicine, 73, 3.02% General Medicine 73 publications, 3.02%
Strategy and Management	Strategy and Management, 70, 2.9% Strategy and Management 70 publications, 2.9%
Nuclear and High Energy Physics	Nuclear and High Energy Physics, 65, 2.69% Nuclear and High Energy Physics 65 publications, 2.69%
Ceramics and Composites	Ceramics and Composites, 64, 2.65% Ceramics and Composites 64 publications, 2.65%
General Chemical Engineering	General Chemical Engineering, 62, 2.57% General Chemical Engineering 62 publications, 2.57%
Catalysis	Catalysis, 61, 2.53% Catalysis 61 publications, 2.53%
Bioengineering	Bioengineering, 59, 2.44% Bioengineering 59 publications, 2.44%
Applied Mathematics	Applied Mathematics, 57, 2.36% Applied Mathematics 57 publications, 2.36%
Physics and Astronomy (miscellaneous)	Physics and Astronomy (miscellaneous), 48, 1.99% Physics and Astronomy (miscellaneous) 48 publications, 1.99%
General Engineering	General Engineering, 48, 1.99% General Engineering 48 publications, 1.99%
Process Chemistry and Technology	Process Chemistry and Technology, 45, 1.86% Process Chemistry and Technology 45 publications, 1.86%
Biomaterials	Biomaterials, 45, 1.86% Biomaterials 45 publications, 1.86%
Inorganic Chemistry	Inorganic Chemistry, 42, 1.74% Inorganic Chemistry 42 publications, 1.74%
	100 200 300 400 500 600 700 800

Journals

	20 40 60 80 100 120 140
Physical Review E	Physical Review E, 124, 5.14% Physical Review E 124 publications, 5.14%
Applied Surface Science	Applied Surface Science, 93, 3.85% Applied Surface Science 93 publications, 3.85%
Thin Solid Films	Thin Solid Films, 81, 3.36% Thin Solid Films 81 publications, 3.36%
Journal of Applied Physics	Journal of Applied Physics, 78, 3.23% Journal of Applied Physics 78 publications, 3.23%
Scientific Reports	Scientific Reports, 68, 2.82% Scientific Reports 68 publications, 2.82%
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 54, 2.24% Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 54 publications, 2.24%
Proceedings of SPIE - The International Society for Optical Engineering	Proceedings of SPIE - The International Society for Optical Engineering, 51, 2.11% Proceedings of SPIE - The International Society for Optical Engineering 51 publications, 2.11%
physica status solidi (c)	physica status solidi (c), 47, 1.95% physica status solidi (c) 47 publications, 1.95%
Vacuum	Vacuum, 46, 1.91% Vacuum 46 publications, 1.91%
Applied Physics Letters	Applied Physics Letters, 39, 1.62% Applied Physics Letters 39 publications, 1.62%
Surface and Coatings Technology	Surface and Coatings Technology, 36, 1.49% Surface and Coatings Technology 36 publications, 1.49%
Nanomaterials	Nanomaterials, 35, 1.45% Nanomaterials 35 publications, 1.45%
Physical Review B	Physical Review B, 33, 1.37% Physical Review B 33 publications, 1.37%
Materials	Materials, 25, 1.04% Materials 25 publications, 1.04%
Materials Science Forum	Materials Science Forum, 24, 0.99% Materials Science Forum 24 publications, 0.99%
Sensors and Actuators, B: Chemical	Sensors and Actuators, B: Chemical, 24, 0.99% Sensors and Actuators, B: Chemical 24 publications, 0.99%
Journal of Crystal Growth	Journal of Crystal Growth, 23, 0.95% Journal of Crystal Growth 23 publications, 0.95%
Carbon	Carbon, 22, 0.91% Carbon 22 publications, 0.91%
phys stat sol (a)	phys stat sol (a), 22, 0.91% phys stat sol (a) 22 publications, 0.91%
New Journal of Physics	New Journal of Physics, 21, 0.87% New Journal of Physics 21 publications, 0.87%
Journal of Magnetism and Magnetic Materials	Journal of Magnetism and Magnetic Materials, 20, 0.83% Journal of Magnetism and Magnetic Materials 20 publications, 0.83%
Materials Science and Engineering B: Solid-State Materials for Advanced Technology	Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 19, 0.79% Materials Science and Engineering B: Solid-State Materials for Advanced Technology 19 publications, 0.79%
Physica Status Solidi (A) Applications and Materials Science	Physica Status Solidi (A) Applications and Materials Science, 17, 0.7% Physica Status Solidi (A) Applications and Materials Science 17 publications, 0.7%
Ceramics International	Ceramics International, 17, 0.7% Ceramics International 17 publications, 0.7%
Procedia Engineering	Procedia Engineering, 17, 0.7% Procedia Engineering 17 publications, 0.7%
Surface and Interface Analysis	Surface and Interface Analysis, 17, 0.7% Surface and Interface Analysis 17 publications, 0.7%
Materials Science and Engineering C	Materials Science and Engineering C, 16, 0.66% Materials Science and Engineering C 16 publications, 0.66%
Journal of Alloys and Compounds	Journal of Alloys and Compounds, 15, 0.62% Journal of Alloys and Compounds 15 publications, 0.62%
Chaos, Solitons and Fractals	Chaos, Solitons and Fractals, 15, 0.62% Chaos, Solitons and Fractals 15 publications, 0.62%
Materials Science in Semiconductor Processing	Materials Science in Semiconductor Processing, 15, 0.62% Materials Science in Semiconductor Processing 15 publications, 0.62%
	20 40 60 80 100 120 140

Publishers

	100 200 300 400 500 600 700 800 900 1000
Elsevier	Elsevier, 966, 40.02% Elsevier 966 publications, 40.02%
Springer Nature	Springer Nature, 264, 10.94% Springer Nature 264 publications, 10.94%
Wiley	Wiley, 182, 7.54% Wiley 182 publications, 7.54%
American Physical Society (APS)	American Physical Society (APS), 178, 7.37% American Physical Society (APS) 178 publications, 7.37%
AIP Publishing	AIP Publishing, 141, 5.84% AIP Publishing 141 publications, 5.84%
MDPI	MDPI, 139, 5.76% MDPI 139 publications, 5.76%
IOP Publishing	IOP Publishing, 100, 4.14% IOP Publishing 100 publications, 4.14%
American Chemical Society (ACS)	American Chemical Society (ACS), 79, 3.27% American Chemical Society (ACS) 79 publications, 3.27%
SPIE-Intl Soc Optical Eng	SPIE-Intl Soc Optical Eng, 53, 2.2% SPIE-Intl Soc Optical Eng 53 publications, 2.2%
Royal Society of Chemistry (RSC)	Royal Society of Chemistry (RSC), 47, 1.95% Royal Society of Chemistry (RSC) 47 publications, 1.95%
Trans Tech Publications	Trans Tech Publications, 34, 1.41% Trans Tech Publications 34 publications, 1.41%
Institute of Electrical and Electronics Engineers (IEEE)	Institute of Electrical and Electronics Engineers (IEEE), 22, 0.91% Institute of Electrical and Electronics Engineers (IEEE) 22 publications, 0.91%
The Electrochemical Society	The Electrochemical Society, 20, 0.83% The Electrochemical Society 20 publications, 0.83%
Taylor & Francis	Taylor & Francis, 19, 0.79% Taylor & Francis 19 publications, 0.79%
Pleiades Publishing	Pleiades Publishing, 19, 0.79% Pleiades Publishing 19 publications, 0.79%
Optica Publishing Group	Optica Publishing Group, 12, 0.5% Optica Publishing Group 12 publications, 0.5%
American Vacuum Society	American Vacuum Society, 12, 0.5% American Vacuum Society 12 publications, 0.5%
EDP Sciences	EDP Sciences, 11, 0.46% EDP Sciences 11 publications, 0.46%
The Royal Society	The Royal Society, 10, 0.41% The Royal Society 10 publications, 0.41%
Public Library of Science (PLoS)	Public Library of Science (PLoS), 9, 0.37% Public Library of Science (PLoS) 9 publications, 0.37%
American Scientific Publishers	American Scientific Publishers, 8, 0.33% American Scientific Publishers 8 publications, 0.33%
Walter de Gruyter	Walter de Gruyter, 7, 0.29% Walter de Gruyter 7 publications, 0.29%
Oxford University Press	Oxford University Press, 7, 0.29% Oxford University Press 7 publications, 0.29%
Akademiai Kiado	Akademiai Kiado, 7, 0.29% Akademiai Kiado 7 publications, 0.29%
World Scientific	World Scientific, 6, 0.25% World Scientific 6 publications, 0.25%
IOS Press	IOS Press, 6, 0.25% IOS Press 6 publications, 0.25%
Japan Society of Applied Physics	Japan Society of Applied Physics, 6, 0.25% Japan Society of Applied Physics 6 publications, 0.25%
Institute of Physics, Polish Academy of Sciences	Institute of Physics, Polish Academy of Sciences, 6, 0.25% Institute of Physics, Polish Academy of Sciences 6 publications, 0.25%
National Library of Serbia	National Library of Serbia, 4, 0.17% National Library of Serbia 4 publications, 0.17%
Emerald	Emerald, 3, 0.12% Emerald 3 publications, 0.12%
	100 200 300 400 500 600 700 800 900 1000

With other organizations

	50 100 150 200 250 300
Budapest University of Technology and Economics	Budapest University of Technology and Economics, 278, 11.52% Budapest University of Technology and Economics 278 publications, 11.52%
HUN-REN Research Centre for Natural Sciences	HUN-REN Research Centre for Natural Sciences, 274, 11.35% HUN-REN Research Centre for Natural Sciences 274 publications, 11.35%
Eötvös Loránd University (University of Budapest)	Eötvös Loránd University (University of Budapest), 213, 8.82% Eötvös Loránd University (University of Budapest) 213 publications, 8.82%
Wigner Research Centre for Physics	Wigner Research Centre for Physics, 110, 4.56% Wigner Research Centre for Physics 110 publications, 4.56%
University of Pannonia	University of Pannonia, 104, 4.31% University of Pannonia 104 publications, 4.31%
Óbuda University	Óbuda University, 75, 3.11% Óbuda University 75 publications, 3.11%
University of Maribor	University of Maribor, 70, 2.9% University of Maribor 70 publications, 2.9%
University of Szeged	University of Szeged, 69, 2.86% University of Szeged 69 publications, 2.86%
Linköping University	Linköping University, 59, 2.44% Linköping University 59 publications, 2.44%
University of Debrecen	University of Debrecen, 52, 2.15% University of Debrecen 52 publications, 2.15%
University of Electronic Science and Technology of China	University of Electronic Science and Technology of China, 42, 1.74% University of Electronic Science and Technology of China 42 publications, 1.74%
Institute for Microelectronics and Microsystems	Institute for Microelectronics and Microsystems, 41, 1.7% Institute for Microelectronics and Microsystems 41 publications, 1.7%
University of Pecs	University of Pecs, 37, 1.53% University of Pecs 37 publications, 1.53%
Korea Research Institute of Standards and Science	Korea Research Institute of Standards and Science, 32, 1.33% Korea Research Institute of Standards and Science 32 publications, 1.33%
Semmelweis University	Semmelweis University, 31, 1.28% Semmelweis University 31 publications, 1.28%
Institute of Physics of the Czech Academy of Sciences	Institute of Physics of the Czech Academy of Sciences, 30, 1.24% Institute of Physics of the Czech Academy of Sciences 30 publications, 1.24%
Aristotle University of Thessaloniki	Aristotle University of Thessaloniki, 28, 1.16% Aristotle University of Thessaloniki 28 publications, 1.16%
Pazmany Peter Catholic University	Pazmany Peter Catholic University, 27, 1.12% Pazmany Peter Catholic University 27 publications, 1.12%
National Institute for Materials Science	National Institute for Materials Science, 21, 0.87% National Institute for Materials Science 21 publications, 0.87%
Jožef Stefan Institute	Jožef Stefan Institute, 21, 0.87% Jožef Stefan Institute 21 publications, 0.87%
Vienna University of Technology	Vienna University of Technology, 20, 0.83% Vienna University of Technology 20 publications, 0.83%
University of Namur	University of Namur, 20, 0.83% University of Namur 20 publications, 0.83%
Institute of Materials Research of the Slovak Academy of Sciences	Institute of Materials Research of the Slovak Academy of Sciences, 20, 0.83% Institute of Materials Research of the Slovak Academy of Sciences 20 publications, 0.83%
Babes-Bolyai University	Babes-Bolyai University, 19, 0.79% Babes-Bolyai University 19 publications, 0.79%
Grenoble Alpes University	Grenoble Alpes University, 17, 0.7% Grenoble Alpes University 17 publications, 0.7%
University of Oxford	University of Oxford, 17, 0.7% University of Oxford 17 publications, 0.7%
Helmholtz-Zentrum Dresden-Rossendorf	Helmholtz-Zentrum Dresden-Rossendorf, 17, 0.7% Helmholtz-Zentrum Dresden-Rossendorf 17 publications, 0.7%
Masaryk University	Masaryk University, 17, 0.7% Masaryk University 17 publications, 0.7%
Institute of Physical Chemistry, Polish Academy of Sciences	Institute of Physical Chemistry, Polish Academy of Sciences, 16, 0.66% Institute of Physical Chemistry, Polish Academy of Sciences 16 publications, 0.66%
Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences	Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences, 15, 0.62% Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences 15 publications, 0.62%
	50 100 150 200 250 300

With foreign organizations

	10 20 30 40 50 60 70
University of Maribor	University of Maribor, 70, 2.9% University of Maribor 70 publications, 2.9%
Linköping University	Linköping University, 59, 2.44% Linköping University 59 publications, 2.44%
University of Electronic Science and Technology of China	University of Electronic Science and Technology of China, 42, 1.74% University of Electronic Science and Technology of China 42 publications, 1.74%
Institute for Microelectronics and Microsystems	Institute for Microelectronics and Microsystems, 41, 1.7% Institute for Microelectronics and Microsystems 41 publications, 1.7%
Korea Research Institute of Standards and Science	Korea Research Institute of Standards and Science, 32, 1.33% Korea Research Institute of Standards and Science 32 publications, 1.33%
Institute of Physics of the Czech Academy of Sciences	Institute of Physics of the Czech Academy of Sciences, 30, 1.24% Institute of Physics of the Czech Academy of Sciences 30 publications, 1.24%
Aristotle University of Thessaloniki	Aristotle University of Thessaloniki, 28, 1.16% Aristotle University of Thessaloniki 28 publications, 1.16%
National Institute for Materials Science	National Institute for Materials Science, 21, 0.87% National Institute for Materials Science 21 publications, 0.87%
Jožef Stefan Institute	Jožef Stefan Institute, 21, 0.87% Jožef Stefan Institute 21 publications, 0.87%
Vienna University of Technology	Vienna University of Technology, 20, 0.83% Vienna University of Technology 20 publications, 0.83%
University of Namur	University of Namur, 20, 0.83% University of Namur 20 publications, 0.83%
Institute of Materials Research of the Slovak Academy of Sciences	Institute of Materials Research of the Slovak Academy of Sciences, 20, 0.83% Institute of Materials Research of the Slovak Academy of Sciences 20 publications, 0.83%
Babes-Bolyai University	Babes-Bolyai University, 19, 0.79% Babes-Bolyai University 19 publications, 0.79%
Grenoble Alpes University	Grenoble Alpes University, 17, 0.7% Grenoble Alpes University 17 publications, 0.7%
University of Oxford	University of Oxford, 17, 0.7% University of Oxford 17 publications, 0.7%
Helmholtz-Zentrum Dresden-Rossendorf	Helmholtz-Zentrum Dresden-Rossendorf, 17, 0.7% Helmholtz-Zentrum Dresden-Rossendorf 17 publications, 0.7%
Masaryk University	Masaryk University, 17, 0.7% Masaryk University 17 publications, 0.7%
Institute of Physical Chemistry, Polish Academy of Sciences	Institute of Physical Chemistry, Polish Academy of Sciences, 16, 0.66% Institute of Physical Chemistry, Polish Academy of Sciences 16 publications, 0.66%
Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences	Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences, 15, 0.62% Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences 15 publications, 0.62%
University of Southampton	University of Southampton, 15, 0.62% University of Southampton 15 publications, 0.62%
Nello Carrara Institute of Applied Physics	Nello Carrara Institute of Applied Physics, 15, 0.62% Nello Carrara Institute of Applied Physics 15 publications, 0.62%
Charles University	Charles University, 15, 0.62% Charles University 15 publications, 0.62%
Institute of Physics of the Polish Academy of Sciences	Institute of Physics of the Polish Academy of Sciences, 15, 0.62% Institute of Physics of the Polish Academy of Sciences 15 publications, 0.62%
Institute of Electrical Engineering of the Slovak Academy of Sciences	Institute of Electrical Engineering of the Slovak Academy of Sciences, 15, 0.62% Institute of Electrical Engineering of the Slovak Academy of Sciences 15 publications, 0.62%
Institute for Automation and Control Processes of the Far Eastern Branch of the Russian Academy of Sciences	Institute for Automation and Control Processes of the Far Eastern Branch of the Russian Academy of Sciences, 13, 0.54% Institute for Automation and Control Processes of the Far Eastern Branch of the Russian Academy of Sciences 13 publications, 0.54%
University of Palermo	University of Palermo, 13, 0.54% University of Palermo 13 publications, 0.54%
University of Parma	University of Parma, 12, 0.5% University of Parma 12 publications, 0.5%
University of Erlangen–Nuremberg	University of Erlangen–Nuremberg, 12, 0.5% University of Erlangen–Nuremberg 12 publications, 0.5%
Physikalisch-Technische Bundesanstalt	Physikalisch-Technische Bundesanstalt, 12, 0.5% Physikalisch-Technische Bundesanstalt 12 publications, 0.5%
Nuclear Physics Institute of the Czech Academy of Sciences	Nuclear Physics Institute of the Czech Academy of Sciences, 12, 0.5% Nuclear Physics Institute of the Czech Academy of Sciences 12 publications, 0.5%
	10 20 30 40 50 60 70

With other countries

	50 100 150 200 250
Germany	Germany, 244, 10.11% Germany 244 publications, 10.11%
Italy	Italy, 146, 6.05% Italy 146 publications, 6.05%
France	France, 124, 5.14% France 124 publications, 5.14%
USA	USA, 111, 4.6% USA 111 publications, 4.6%
Slovenia	Slovenia, 98, 4.06% Slovenia 98 publications, 4.06%
China	China, 95, 3.94% China 95 publications, 3.94%
Belgium	Belgium, 93, 3.85% Belgium 93 publications, 3.85%
Czech Republic	Czech Republic, 82, 3.4% Czech Republic 82 publications, 3.4%
Russia	Russia, 81, 3.36% Russia 81 publications, 3.36%
United Kingdom	United Kingdom, 81, 3.36% United Kingdom 81 publications, 3.36%
Sweden	Sweden, 74, 3.07% Sweden 74 publications, 3.07%
Japan	Japan, 70, 2.9% Japan 70 publications, 2.9%
Austria	Austria, 67, 2.78% Austria 67 publications, 2.78%
Poland	Poland, 61, 2.53% Poland 61 publications, 2.53%
Romania	Romania, 54, 2.24% Romania 54 publications, 2.24%
Republic of Korea	Republic of Korea, 49, 2.03% Republic of Korea 49 publications, 2.03%
Slovakia	Slovakia, 49, 2.03% Slovakia 49 publications, 2.03%
Greece	Greece, 43, 1.78% Greece 43 publications, 1.78%
Switzerland	Switzerland, 40, 1.66% Switzerland 40 publications, 1.66%
Spain	Spain, 36, 1.49% Spain 36 publications, 1.49%
Bulgaria	Bulgaria, 26, 1.08% Bulgaria 26 publications, 1.08%
Ukraine	Ukraine, 25, 1.04% Ukraine 25 publications, 1.04%
Brazil	Brazil, 19, 0.79% Brazil 19 publications, 0.79%
Finland	Finland, 17, 0.7% Finland 17 publications, 0.7%
Portugal	Portugal, 16, 0.66% Portugal 16 publications, 0.66%
Egypt	Egypt, 15, 0.62% Egypt 15 publications, 0.62%
Ireland	Ireland, 14, 0.58% Ireland 14 publications, 0.58%
Denmark	Denmark, 13, 0.54% Denmark 13 publications, 0.54%
Turkey	Turkey, 13, 0.54% Turkey 13 publications, 0.54%
	50 100 150 200 250

We do not take into account publications without a DOI.
Statistics recalculated daily.
Publications published earlier than 1991 are ignored in the statistics.
The horizontal charts show the 30 top positions.
Journals quartiles values are relevant at the moment.