Content Provider
Canadian Science Publishing (via Crossref)
216
University of Calgary Journal Hosting
187
Directory of Open Access Journals: DOAJ Articles
180
Cambridge University Press
98
Wiley Online Library (via Crossref)
93
ScienceDirect (Elsevier - via Crossref)
90
Unknown
87
Wiley Online Library
78
Canadian Science Publishing
76
Springer Nature (via Crossref)
72
DataCite Metadata Store (German National Library of Science and Technology)
56
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
52
ScienceDirect (Elsevier)
51
Informa (via Crossref)
45
Niedersächsisches Online-Archiv NOA
44
Cambridge University Press (via Crossref)
28
Université de Nantes: HAL-UNIV-NANTES
26
Institut national des sciences de l'Univers: HAL-INSU
22
The Canadian Field-Naturalist (E-Journal)
20
LeibnizOpen (The Leibniz Association)
19
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
19
University of New Brunswick: Centre for Digital Scholarship Journals
19
Informa
17
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
16
University of California Press
16
University of Tromsø: Septentrio Academic Publishing
15
University of Bristol: Bristol Research
14
SAGE Publications (via Crossref)
13
University of California Press (via Crossref)
13
AAAS Resource Center (American Association for the Advancement of Science - via Crossref)
12
Oxford University Press
12
Oxford University Press (via Crossref)
12
AAAS Resource Center (American Association for the Advancement of Science)
11
Carleton University's Institutional Repository
11
HAL Sorbonne Université
10
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
10
University of Cambridge, Department of Earth Sciences: ESC Publications
10
University of Copenhagen: Research
10
University of Groningen research database
10
Aarhus University: Research
9
Max Planck Society: MPG.PuRe
9
MSpace at the University of Manitoba
8
Natural Environment Research Council: NERC Open Research Archive
8
Apollo - University of Cambridge Repository
7
Institut national de la recherche scientifique, Québec: Espace INRS
7
University College London: UCL Discovery
7
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
7
York University, Toronto: YorkSpace
7
Archive Ouverte de l'Université Rennes (HAL)
6
PLOS
6
more ...