GOLUB , A. P. Convergence of denominators of the Pade joint approximations of a set of confluent hypergeometric functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 40, n. 6, p. 792–795, 1988. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/9294. Acesso em: 6 dec. 2025.