KOVÁČIK, Štefan. Computers and teaching mathematics. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, [S. l.], v. 3, p. 113–117, 2003. Disponível em: https://studmath.uken.krakow.pl/article/view/13476. Acesso em: 30 oct. 2026.