Google Scholar, Web of Science, and Scopus: A systematic comparison of citations in 252 subject categories

Alberto Martín-Martín, Enrique Orduña-Malea, Mike Thelwall, Emilio Delgado López-Cózar. Google Scholar, Web of Science, and Scopus: A systematic comparison of citations in 252 subject categories. J. Informetrics, 12(4):1160-1177, 2018. [doi]

Abstract

Abstract is missing.