Content Provider
AAAI Publications (Association for the Advancement of Artificial Intelligence)
3
AAAS Resource Center (American Association for the Advancement of Science - via Crossref)
17
AAAS Resource Center (American Association for the Advancement of Science)
37
ACM Publications (Association for Computing Machinery)
4
ACS Publications
5
ACS Publications (via Crossref)
8
ACS Publisher Journals
4
ADDI: Repositorio Institucional de la Universidad del País Vasco (UPV)
5
AESS Publications (Asian Economic and Social Society)
1
AGH (Akademia Górniczo-Hutnicza) University of Science and Technology: Journals
3
AIB studi (E-Journal - Associazione italiana bibliotech)
1
AIP Publishing
8
AJAN - Australian Journal of Advanced Nursing
1
AJOL - African Journals Online
6
AMA
12
AMA (via Crossref)
13
AMAD - "Archivum Medii Aevi Digitale - Specialized open access repository for research in the middle ages"
4
AMH International
1
AMPCo (Australasian Medical Publishing Company - via Crossref)
4
AMUR - Adam Mickiewicz University Repository, Poznan
6
AOTA Press
1
AOTA Press (via Crossref)
1
APA Publishing (American Psychological Association)
3
ARCA - IGC Repository (Access to Research and Communication Annals: Instituto Gulbenkian de Ciência)
1
ARCIMÍS (Archivo Climatológico y Meteorológico Institucional - AEMET, Agencia Estatal de Meteorología)
1
ARPI - Archivio della Ricerca dell'Università di Pisa
31
ARUd'A - Archivio Istituzionale della ricerca dell'università Chieti-Pescara (IRIS)
5
ASERS Publishing Journals
1
ASM Journals (American Society for Microbiology - via Crossref)
8
ASM Journals (American Society for Microbiology)
44
Aalborg University's Research Portal
85
Aalto University Publication Archive (Aaltodoc)
7
Aarhus University: OJS at The State and University Library
96
Aarhus University: Research
350
Aberdeen University Research Archive (AURA)
39
Academic Сommentaries. Series: Pedagogical Sciences Volodymyr Vynnychenko Central Ukrainian State Pedagogical University
2
Academy Publication
1
Academy Publication Online
1
Adam Mickiewicz University in Poznań: PRESSto
10
Afyon Kocatepe University Institutional Repository (DSpace@AKU)
1
AgEcon Search - Research in Agricultural & Applied Economics
4
AgroParisTech: HAL (Institut des sciences et industries du vivant et de l'environnement)
5
AgroSpace - Faculty of Agriculture, University of Belgrade
2
Aichi Shukutoku University Knowledge Archive (ASKA-R)
1
Aisberg - Archivio istituzionale dell'Università di Bergamo
4
Aix-Marseille Université: HAL
16
Akademia Ignatianum w Krakowie: Czasopisma
4
Akademicka Platforma Czasopism
6
Akademicka Platforma Czasopism (APCZ)
6
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
75
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