APPELL & KAMPE DE FERIET, Fonctions Hypergéométriques et Hypersphériques, 1926

First edition.
The book presents the Kampé de Fériet function, which is a higher-order hypergeometric function with two variables. It constitutes a two-variable generalization of the hypergeometric series introduced by Joseph Kampé de Fériet and Paul Appell in this book.