GAJDEK, Seweryn. Bitcoin as an example of cryptocurrency – current state and perspectives. Annals of Marketing Management & Economics, [S. l.], v. 4, n. 2, p. 47–56, 2018. DOI: 10.22630/AMME.2018.4.2.16. Disponível em: https://amme.sggw.edu.pl/article/view/6911. Acesso em: 19 apr. 2025.