PARAMESWARAN, M. R. On the Translativity of Hausdorff and Some Related Methods of Summability. The Journal of the Indian Mathematical Society, [S. l.], v. 23, n. 1-2, p. 45–64, 1959. DOI: 10.18311/jims/1959/16919. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/16919. Acesso em: 29 apr. 2024.