BHUVA, P. A.; GHODADRA, B. L. On the Absolute Norlund Summability of Double Fourier Series. The Journal of the Indian Mathematical Society, [S. l.], v. 91, n. 3-4, p. 511–536, 2024. DOI: 10.18311/jims/2024/33311. Disponível em: https://informaticsjournals.com/index.php/jims/article/view/33311. Acesso em: 25 aug. 2024.