PŁOCKI, A. Street gambling, mathematization and the mathematical expectation. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, [S. l.], v. 3, p. 187–195, 2003. Disponível em: https://studmath.uken.krakow.pl/article/view/13487. Acesso em: 30 oct. 2026.