SITARAMAIAH, V.; SUBBARAO, M. V. Asymptotic Formulae for Sums of Reciprocals of Some Multiplicative Functions. The Journal of the Indian Mathematical Society, [S. l.], v. 57, n. 1-4, p. 153–167, 1991. Disponível em: http://informaticsjournals.com/index.php/jims/article/view/21936. Acesso em: 4 may. 2024.