Content Provider
Oxford University Press (via Crossref)
1,553
Canadian Science Publishing (via Crossref)
1,295
Springer Nature (via Crossref)
963
ScienceDirect (Elsevier - via Crossref)
695
ScienceDirect (Elsevier)
511
Informa (via Crossref)
440
Canadian Science Publishing
336
Oxford University Press
286
Cambridge University Press
277
Brill (via Crossref)
218
Wiley Online Library (via Crossref)
180
De Gruyter (via Crossref)
164
JSTOR (via Crossref)
97
The University of Queensland: UQ eSpace
94
Wiley Online Library
82
University of Chicago Press (via Crossref)
76
Informa
62
Sciendo (de Gruyter - via CrossRef)
51
Brill
25
Cambridge University Press (via Crossref)
25
University of Chicago Press
25
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
20
JSTOR
19
Queen's University Belfast Research Portal
19
De Gruyter
18
DataCite
16
SAGE Publications (via Crossref)
14
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
14
Frontiers (Publisher)
10
University of St Andrews: Digital Research Repository
9
Aberdeen University Research Archive (AURA)
5
DataCite Metadata Store (German National Library of Science and Technology)
5
Sapienza Università di Roma: CINECA IRIS
5
Unknown
5
Discovery - University of Dundee Online Publications
4
Ghent University Academic Bibliography
4
SAGE Publications
4
Schweizerbart Science Publishers (via Crossref)
4
The University of Milan: Archivio Istituzionale della Ricerca (AIR)
4
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System)
3
IRIS Università degli Studi di Napoli Federico II
3
Opin vísindi (Iceland)
3
Utrecht University Repository
3
Zenodo
3
ARPI - Archivio della Ricerca dell'Università di Pisa
2
Bentham Science Publishers (via Crossref)
2
IRIS UNIPV (Università degli studi di Pavia)
2
IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria)
2
Mary Ann Liebert, Inc., publishers (via Crossref)
2
OpenMETU (Middle East Technical University)
2
more ...