Content Provider
Cambridge University Press
2,777
ScienceDirect (Elsevier - via Crossref)
1,956
JSTOR (via Crossref)
946
Informa (via Crossref)
911
ScienceDirect (Elsevier)
801
Springer Nature (via Crossref)
426
Informa
383
SAGE Publications (via Crossref)
159
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
107
Utrecht University Repository
107
SAGE Publications
89
Cambridge University Press (via Crossref)
68
DataCite
64
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
60
Wiley Online Library (via Crossref)
43
University of Liège: ORBi (Open Repository and Bibliography)
39
University of St Andrews: Digital Research Repository
30
University of Toronto Press (U Toronto Press - via Crossref)
29
Wiley Online Library
23
DIAL@UCLouvain (Université catholique de Louvain)
21
DIAL@USL-B (Université Saint-Louis, Bruxelles)
21
Aberdeen University Research Archive (AURA)
17
JSTOR
17
Queen's University Belfast Research Portal
10
University of Nottingham: Repository@Nottingham
10
Caltech Authors (California Institute of Technology)
8
The University of Queensland: UQ eSpace
8
University of Hertfordshire: UH Research Archive
8
Université de Lausanne (UNIL): Serval - Serveur académique lausannois
8
De Gruyter (via Crossref)
7
Longwoods Publishing (via Crossref)
7
Canadian Science Publishing (via Crossref)
6
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System)
6
Padua Research Archive (IRIS - Università degli Studi di Padova)
6
IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria)
4
Opin vísindi (Iceland)
4
Universidad de Chile: Repositorio académico
4
University of Vienna: Phaidra
4
ARPI - Archivio della Ricerca dell'Università di Pisa
3
DataCite Metadata Store (German National Library of Science and Technology)
3
Schweizerbart Science Publishers (via Crossref)
3
Technical University of Denmark: DTU Orbit
3
University of Toronto Press (U Toronto Press)
3
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive)
3
Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste)
3
Archivio della ricerca dell'Università di Parma (CINECA IRIS)
2
Ghent University Academic Bibliography
2
Johns Hopkins University Press
2
Johns Hopkins University Press (via Crossref)
2
OpenMETU (Middle East Technical University)
2
more ...