ÁDÁM, Zsolt; LAJKÓ, Károly; MAKSA, Gyula; MÉSZÁROS, Fruzsina. Sequenced problems for functional equations. Teaching Mathematics and Computer Science, [S. l.], v. 4, n. 1, p. 179–192, 2006. DOI: 10.5485/TMCS.2006.0126. Disponível em: https://ojs.lib.unideb.hu/tmcs/article/view/14767. Acesso em: 20 oct. 2024.