RICHTEREK, L. Celostátní kolo FO 2017. Matematika–Fyzika–Informatika, [S. l.], v. 26, n. 3, p. 237–239, 2017. Disponível em: http://158.194.80.143/index.php/mfi/article/view/344. Acesso em: 13 led. 2025.