AMSil, R. (2013). Report of Meeting. The Thirteenth Katowice–Debrecen Winter Seminar on Functional Equations and Inequalities, Zakopane (Poland), January 30 – February 2, 2013. Annales Mathematicae Silesianae, 27, 107–125. Retrieved from https://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/14008