AMSilR. “Report of Meeting. The Second Debrecen-Katowice Winter Seminar on Functional Equations and Inequalities January 30 - February 2, 2002, Hajdúszoboszló, Hungary”. Annales Mathematicae Silesianae, Vol. 16, Jan. 2003, pp. 83-02, https://journals.us.edu.pl/index.php/AMSIL/article/view/14111.