1. Agarwal, R. P. (1953). A Propos d’une note de M. Pierre Humbert, C. R. Acad. Sci. Paris, 296, 2031–2032.
2. Agarwal, R. P. (1963). Generalized Hypergeometric Series, Asia Publishing House, Bombay, London and New York.
3. Caputo, M. (1969). Elasticitá e Dissipazione, Zanichelli, Bologna.
4. Dzherbashyan, M.M. (1966). Integral Transforms and Representation of Functions in Complex Domain (in Russian), Nauka, Moscow.
5. Erdélyi, A. (1950-51). On some functional transformations, Univ. Politec. Torino, Rend. Sem. Mat. 10, 217–234.