AMSil R. Report of Meeting. The Third Katowice-Debrecen Winter Seminar on Functional Equations and Inequalities January 29 - February 1, 2003, Będlewo, Poland. Ann. Math. Sil. [Internet]. 2003 Sep. 30 [cited 2025 Dec. 5];17:67-84. Available from: https://journals.us.edu.pl/index.php/AMSIL/article/view/14102