PELIKÁN, Štěpán. Probability and statistics: a modular system of instruction at the University of J. E. Purkyně in Ústí nad Labem. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, [S. l.], v. 3, p. 171–177, 2003. Disponível em: https://studmath.uken.krakow.pl/article/view/13485. Acesso em: 30 oct. 2026.