LAL, S. ON MATRIX SUMMABILITY OF JACOBI SERIES. Tamkang Journal of Mathematics, [S. l.], v. 30, n. 3, p. 191–202, 1999. DOI: 10.5556/j.tkjm.30.1999.4225. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4225. Acesso em: 28 mar. 2024.