On the functional equation F(x,φ(x),φ[f(x)])=0

Instytut Matematyczny Polskiej Akademii Nauk / Institute of Mathematics / Publishing house / Journals and Serials / Annales Polonici Mathematici / All issues

J. Kordylewski, M. Kuczma Annales Polonici Mathematici 7 (1959), 21-32 DOI: 10.4064/ap-7-1-21-32