GÓROWSKI, J.; ŁOMNICKI, A. Prime counting function π. Annales Universitatis Paedagogicae Cracoviensis | Studia ad Didacticam Mathematicae Pertinentia, [S. l.], v. 5, p. 71–76, 2017. Disponível em: https://didacticammath.uken.krakow.pl/article/view/3671. Acesso em: 3 may. 2024.