E.E., Lukina; M.V., Dolgachev. Electronic Payment Systems and Blockchain as a Constituent Part. KnE Social Sciences, [S. l.], v. 3, n. 2, p. 174–181, 2018. DOI: 10.18502/kss.v3i2.1540. Disponível em: https://knepublishing.com/index.php/KnE-Social/article/view/1540. Acesso em: 29 oct. 2025.