Understanding the corpus of mobile payment services research: an analysis of the literature using co-citation analysis and social network analysis. JISTEM J. Inf. Syst. Technol. Manag. (Online) [Internet]. 2020 May 14 [cited 2024 May 3];17:e202017002. Available from: https://www.revistas.usp.br/jistem/article/view/185733