AMSilR. (2010). Report of Meeting: The Tenth Debrecen–Katowice Winter Seminar on Functional Equations and Inequalities, Zamárdi (Hungary), February 3–6, 2010. Annales Mathematicae Silesianae, 24, 87-100. Retrieved from https://www.journals.us.edu.pl/index.php/AMSIL/article/view/14037