Publisher
Elsevier
15
MDPI AG
12
SAGE Publications
9
Taylor & Francis
Cambridge University Press
8
Hindawi
7
Springer
Wiley
5
Frontiers Media S.A.
4
BioMed Central
3
Discover
2
Open Library of Humanities
2
Copernicus Publications
1
IOP Publishing
1
Karger
1
Nature Portfolio
1
SPIE
Springer VS
1
Wiley-Hindawi
1