PATHAK, R. S.; TRIPATHI, S. M. A Class of Pseudo-Differential Operators Involving Hankel Convolutions. The Journal of the Indian Mathematical Society, [S. l.], v. 70, n. 1-4, p. 145–156, 2003. Disponível em: https://informaticsjournals.com/index.php/jims/article/view/21927. Acesso em: 2 may. 2024.