MAKAROV, V. Yu. Characteristics of the sum of a multidimensional series. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 46, n. 7, p. 886–892, 1994. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5680. Acesso em: 6 dec. 2025.