KUDŁACIK, Przemysław; SIKORA, Agnieszka. Cryptocurrencies — Virtual Gold. No Limits, [S. l.], n. 2(8), p. 16–17, 2023. Disponível em: https://trrest.vot.pl/ojsus/index.php/no_limits/article/view/16257. Acesso em: 7 may. 2025.