Farhadian, Reza, and Rafael Jakimczuk. 2022. “A Further Generalization of $\lim_{n\to\infty}\sqrt[n]{n!} N = 1 E$”. Annales Mathematicae Silesianae 36 (2):167-75. https://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/13549.