YILUN, Shang. A Class of Combinatorial Functions for Eulerian Numbers. MATEMATIKA, [S. l.], v. 28, p. 151–154, 2012. DOI: 10.11113/matematika.v28.n.569. Disponível em: https://matematika.utm.my/index.php/matematika/article/view/569. Acesso em: 28 nov. 2024.