EISENMANN, P. Students’ ideas about infinity. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, [S. l.], v. 3, p. 45–48, 2003. Disponível em: https://studmath.uken.krakow.pl/article/view/13465. Acesso em: 30 oct. 2026.