TY  - JOUR 
AU  - Martín Martín, Alberto
AU  - Orduña-Malea, Enrique
AU  - Thelwall, Mike
AU  - Delgado López-Cózar, Emilio
PY  - 2018
UR  - http://hdl.handle.net/10481/53260
AB  - Despite citation counts from Google Scholar (GS), Web of Science (WoS), and Scopus being widely consulted by researchers and sometimes used in research evaluations, there is no recent or systematic evidence about the differences between them. In...
LA  - eng
PB  - Elsevier
KW  - Google Scholar
KW  - Web of Science
KW  - Scopus
KW  - bibliographic databases
KW  - academic search engines
KW  - coverage
KW  - citation analysis
KW  - unique citations
KW  - citation overlap
KW  - bibliometrics
KW  - scientometrics
TI  - Google Scholar, Web of Science, and Scopus: A systematic comparison of citations in 252 subject categories
DO  - 10.31235/osf.io/42nkm
ER  -