Content Provider
Canadian Science Publishing (via Crossref)
124
Springer Nature (via Crossref)
32
Canadian Science Publishing
29
Utrecht University Repository
15
ScienceDirect (Elsevier - via Crossref)
6
Frontiers (Publisher)
5
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
4
ScienceDirect (Elsevier)
3
Aberdeen University Research Archive (AURA)
2
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2
De Gruyter (via Crossref)
2
Directory of Open Access Journals: DOAJ Articles
2
HELDA – University of Helsinki Open Repository
2
I-Revues (E-Journals, INIST-CNRS)
2
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System)
2
Lund University Publications (LUP)
2
Technical University of Denmark: DTU Orbit
2
University of Liège: ORBi (Open Repository and Bibliography)
2
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca)
2
Università degli Studi di Napoli "Parthenope": CINECA IRIS
2
Caltech Authors (California Institute of Technology)
1
DataCite Metadata Store (German National Library of Science and Technology)
1
Institutional Repository of Leibniz Universität Hannover
1
LaCRIS - University of Lapland Current Research System
1
Oxford University Press
1
Oxford University Press (via Crossref)
1
Sciendo (de Gruyter - via CrossRef)
1
The University of Queensland: UQ eSpace
1
Umeå University: Publications (DiVA)
1
University of Michigan: Deep Blue
1
University of St Andrews: Digital Research Repository
1
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
1
Università Politecnica delle Marche: IRIS
1
Università degli Studi di Genova: CINECA IRIS
1
Università degli studi di Torino: AperTo (Archivio Istituzionale ad Accesso Aperto)
1
Unknown
1
İstanbul Üniversitesi Açık Erişim Sistemi
1