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California Digital Library
35
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German National Library of Science and Technology
24
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Institute for Scientific and Technical Information
20
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The British Library
18
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Australian National Data Service
18
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ETH Zurich
16
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GESIS - Leibniz Institute for the Social Sciences
15
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MTA Könyvtára
15
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National Research Council Canada
13
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Office of Scientific and Technical Information (OSTI), US Department of Energy
12
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German National Library of Medicine
9
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CRUI2011
9
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SPbPU
7
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Swedish National Data Service
6
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CERN - European Organization for Nuclear Research
6
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BIBSYS
6
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Niedersächsische Staats- und Universitätsbibliothek Göttingen
5
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TU Delft Library
4
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Deutsche Zentralbibliothek für Wirtschaftswissenschaften – Leibniz-Informationszentrum Wirtschaft
4
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Purdue University Library
3
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Tartu University
3
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Technical Information Center of Denmark
2
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CSIC
2
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CSC IT Center for Science
2
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National Research Foundation of South Africa
1
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FAO
1
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TIND
1
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figshare
1
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Tsinghua University Library
1
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ResearchGate
1
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United States Geological Survey
1