AMSil R. Report of Meeting. The Eighteenth Debrecen–Katowice Winter Seminar on Functional Equations and Inequalities Hajdúszoboszló (Hungary), January 31–February 3, 2018. Ann. Math. Sil. [Internet]. 2018 May 14 [cited 2025 May 7];32:333-49. Available from: https://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/13931