Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
637
Unknown
455
Canadian Science Publishing (via Crossref)
439
Directory of Open Access Journals: DOAJ Articles
361
University of Calgary Journal Hosting
318
University of Lethbridge Digitized Collections
282
PANGAEA - Data Publisher for Earth & Environmental Science
209
Biodiversity Heritage Library (BHL)
166
Cambridge University Press
161
PubMed Central (PMC)
143
Theses Canada/Thèses Canada (Library and Archives Canada)
143
ScienceDirect (Elsevier - via Crossref)
142
Wiley Online Library (via Crossref)
128
University of Alberta: Era - Education and Research Archive
116
Canadian Science Publishing
115
Wiley Online Library
112
PRISM - University of Calgary Digital Repository
106
University of British Columbia: cIRcle - UBC's Information Repository
104
Informa (via Crossref)
68
Springer Nature (via Crossref)
68
MSpace at the University of Manitoba
61
University of Waterloo, Canada: Institutional Repository
55
ScienceDirect (Elsevier)
54
University of Victoria (Canada): UVicDSpace
50
Carleton University's Institutional Repository
49
Cambridge University Press (via Crossref)
48
Defense Technical Information Center: DTIC Technical Reports database
45
Hathi Trust Digital Library
44
University of Saskatchewan: eCommons@USASK
44
SAGE Publications (via Crossref)
42
MDPI Open Access Publishing
41
WikiBooks - Open-content textbooks
41
VIURRSpace (Royal Roads University and Vancouver Island University)
40
uO Research (University of Ottawa - uOttawa)
40
Queen's University, Ontario: QSpace
38
University of Tromsø: Septentrio Academic Publishing
37
Érudit.org (Université Montréal)
37
York University Digital Library
33
The Canadian Field-Naturalist (E-Journal)
32
Wilfrid Laurier University, Ontario: Scholars Commons@Laurier
32
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
31
Copernicus Publications: E-Journals
31
LeibnizOpen (The Leibniz Association)
31
Borealis
30
Arca (BC's Digital Treasures)
28
Memorial University of Newfoundland: Research Repository
26
Queen's University Belfast Research Portal
26
University of Michigan: Digital Collections
25
Informa
23
National Research Council Canada: NRC Publications Archive
22
more ...