SÎNTAMARIAN, Alina. Euler’s constant, new classes of sequences and estimates. CUBO, A Mathematical Journal, [S. l.], v. 15, n. 3, p. 105–122, 2013. Disponível em: https://cubo.ufro.cl/index.php/cubo/article/view/1303. Acesso em: 12 oct. 2025.