Functional equations in several variables / J. Aczél, J. Dhombres, 1989
LCNA, 1992 : Aczél, Janos D., 1924-
Wikipedia, 2020-03-112
Information trouvée : János Dezső Aczél FRSC (Hungarian: [ˈɒt͡seːl]; 26 December 1924 – 1 January 2020),also
known as John Aczel,[3] was a Hungarian-Canadian mathematician, who specialized in
functional equations and information theory.