KUNKOWSKI, J. Role and tasks of payment integrators in the Polish e-commerce. Copernican Journal of Finance & Accounting, [S. l.], v. 2, n. 2, p. 75–89, 2013. DOI: 10.12775/CJFA.2013.017. Disponível em: https://apcz.umk.pl/CJFA/article/view/CJFA.2013.017. Acesso em: 28 jul. 2024.