Content Provider
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
328
Directory of Open Access Journals: DOAJ Articles
323
Informa (via Crossref)
201
North Dakota State University (NDSU): Digital Horizons
140
DataCite Metadata Store (German National Library of Science and Technology)
126
SAGE Publications (via Crossref)
104
Springer Nature (via Crossref)
83
Wiley Online Library (via Crossref)
82
Borealis
70
SAGE Publications
54
Fanshawe College: FIRST (Fanshawe Innovation Research Scholarship Teaching)
53
University of California Press (via Crossref)
52
Informa
46
Unknown
44
Opin vísindi (Iceland)
39
The University of Western Ontario: Scholarship@Western
35
Hirsla - Landspítali University Hospital research archive
33
University of Calgary Journal Hosting
33
Wiley Online Library
33
IOP Publishing
32
IOP Publishing (via Crossref)
27
ScienceDirect (Elsevier - via Crossref)
25
Athabasca University Digitization Portal
23
Cambridge University Press
23
Emerald (via Crossref)
23
University of Toronto Press (U Toronto Press - via Crossref)
19
uO Research (University of Ottawa - uOttawa)
18
University of Alaska: ScholarWorks@UA
17
ACS Publications (via Crossref)
15
De Gruyter (via Crossref)
13
Digital Commons @ CSUMB (California State University, Monterey Bay)
12
DIAL@USL-B (Université Saint-Louis, Bruxelles)
11
Frontiers (Publisher)
11
Pillars at Taylor University
11
ScienceDirect (Elsevier)
11
University of Chicago Press (via Crossref)
11
University of Wollongong, Australia: Research Online
11
pedocs document server (German Education Portal/DIPF)
11
Athabasca University Press (via Crossref)
10
Frontiers: Figshare
10
Marmara Üniversitesi: Açık Arşiv Hizmete Girdi
10
OhioLINK: Electronic Theses and Dissertations Center
10
Theses Canada/Thèses Canada (Library and Archives Canada)
10
University of California: eScholarship
10
University of Michigan: Digital Collections
10
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
9
Georgia Southern University: Digital Commons@Georgia Southern
9
JSTOR (via Crossref)
9
University of North Texas: UNT Digital Library
9
Zenodo
9
more ...