AMSil R. Report of Meeting. The Fifteenth Katowice-Debrecen Winter Seminar, Będlewo (Poland), January 28–31, 2015. Ann. Math. Sil. [Internet]. 2015 Sep. 30 [cited 2025 Dec. 5];29:151-65. Available from: https://journals.us.edu.pl/index.php/AMSIL/article/view/13985