M. I. QURESHI; K. A. QURAISHI; B. KHAN; R. SINGH. Multiplication Formulae for Double Hypergeometric Functions of Exton and Kampe Deferiet. International Journal of Mathematics And its Applications, [S. l.], v. 3, n. 3 - D, p. 19–24, 2015. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/472. Acesso em: 11 may. 2024.