SOLARZ, P. A note on some iterative roots. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, [S. l.], v. 8, p. 57–66, 2009. Disponível em: https://studmath.uken.krakow.pl/article/view/13259. Acesso em: 31 oct. 2026.