CALÁBEK, P. 12. ročník CPSJ. Matematika–Fyzika–Informatika, [S. l.], v. 33, n. 3, p. 235–236, 2024. Disponível em: http://158.194.80.143/index.php/mfi/article/view/847. Acesso em: 13 led. 2025.