1. Generalized Paley–Wiener theorem and generalized convolution associated with the differential operator Dzn in the complex domain;Ben Cheikh;Integral Transforms Special Functions,2000
2. Differential equations satisfied by the components with respect to the cyclic group of order n of some special functions;Ben Cheikh;J. Math. Anal. Appl.,2000
3. J. Delsarte, Sur une extension de la formule de Taylor, J. Math. Pures Appl. 17 Fasc. III (1938) 213–231.
4. Transmutations d'opérateurs différentiels dans le domaine complexe;Delsarte;Comment. Math. Helv.,1957
5. A. Erdélyi, W. Magnus, F. Oberhettinger, F.G. Tricomi, Higher Transcendal Functions, Vol. III, McGraw-Hill, New York, Toronto, London, 1955.