BUTERIN, S. A Brief introduction of Professor Yurko. Tamkang Journal of Mathematics, [S. l.], v. 50, n. 3, p. i-ii, 2019. DOI: 10.5556/j.tkjm.50.2019.3346. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/3346. Acesso em: 6 may. 2024.