AMSil, Redakcja. “Report of Meeting. The Eighteenth Debrecen–Katowice Winter Seminar on Functional Equations and Inequalities Hajdúszoboszló (Hungary), January 31–February 3, 2018”. Annales Mathematicae Silesianae 32 (May 14, 2018): 333-349. Accessed May 18, 2024. https://journals.us.edu.pl/index.php/AMSIL/article/view/13931.