Google Scholar, Web of Science, and Scopus: A systematic comparison of citations in 252 subject categories
Alberto Martín‐Martín
,
Enrique Orduña‐Malea
,
Mike Thelwall
,
Alberto Martín‐Martín
,
Enrique Orduña‐Malea
,
Mike Thelwall
,
Emilio Delgado López‐Cózar
2018
Journal of Informetrics
1,658 citations