ZHANG, X.; TANG, S.; ZHAO, Y.; WANG, G.; ZHENG, H.; ZHAO, B. Cold Hard E-Cash: Friends and Vendors in the Venmo Digital Payments System. Proceedings of the International AAAI Conference on Web and Social Media, [S. l.], v. 11, n. 1, p. 387-396, 2017. DOI: 10.1609/icwsm.v11i1.14873. Disponível em: https://ojs.aaai.org/index.php/ICWSM/article/view/14873. Acesso em: 25 apr. 2024.