Khan, M. y Salama Abukhammash, G. (2002) On a generalization of Appell*s functions of two variables, Pro Mathematica, 16(31-32), pp. 61-83. Disponible en: https://revistas.pucp.edu.pe/index.php/promathematica/article/view/8183 (Accedido: 18abril2024).