OF MEETING, R. 12th International Conference on Functional Equations and Inequalities, Będlewo, September 7–14, 2008. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, [S. l.], v. 7, p. 125–159, 2008. Disponível em: https://studmath.uken.krakow.pl/article/view/13274. Acesso em: 29 oct. 2026.