MISHRA, B. P. Some Theorems on Absolute Summability. The Journal of the Indian Mathematical Society, [S. l.], v. 31, n. 2, p. 69–79, 1967. DOI: 10.18311/jims/1967/16791. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/16791. Acesso em: 2 may. 2024.