ZIELIŃSKI, M. Cardinality of the sets of all bijections, injections and surjections. Annales Universitatis Paedagogicae Cracoviensis | Studia ad Didacticam Mathematicae Pertinentia, [S. l.], v. 11, p. 143–151, 2019. DOI: 10.24917/20809751.11.8. Disponível em: https://didacticammath.uken.krakow.pl/article/view/6912. Acesso em: 21 nov. 2024.