BAHYRYCZ, A. On sets associated to conditional equation of exponential function. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, [S. l.], v. 6, p. 19–33, 2006. Disponível em: https://studmath.uken.krakow.pl/article/view/13277. Acesso em: 31 oct. 2026.