DAS, G. Some Theorems on Absolute Norlund Summability. The Journal of the Indian Mathematical Society, [S. l.], v. 31, n. 1, p. 1–9, 1967. DOI: 10.18311/jims/1967/16785. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/16785. Acesso em: 5 may. 2024.