GYAN DAS, . S. K. S. A. K. T. . On the Relative Strength of Double Fourier Series and its Allied Series. Mathematical Statistician and Engineering Applications, [S. l.], v. 70, n. 1, p. 826–837, 2021. Disponível em: https://philstat.org/index.php/MSEA/article/view/2744. Acesso em: 3 jul. 2024.