DHIVYA M, BALAMOUROUGANE R, NITHIN J, R VELU RAJ. Unified Payment Interface: A Unique Payment Interface in the Universe- Secondary Data Analysis . European Economic Letters (EEL), [S. l.], v. 13, n. 3, p. 1259–1267, 2023. DOI: 10.52783/eel.v13i3.423. Disponível em: https://www.eelet.org.uk/index.php/journal/article/view/423. Acesso em: 10 jan. 2026.