1. Erdelyi, A.: On fractional integration and its application to the theory of Hankel transforms. Quart. J. Math. Oxford Ser. 11, 293–303 (1940)
2. Erdelyi, A., Magnus, W., Oberhettinger, F., Tricomi, F.G.: Tables of integral transforms. Vol. II, Ch. 13, McGraw Hill Book Company, New York, Toronto, London (1954)
3. Gupta, K.C., Soni, R.C.: On composition of some general fractional integral operators. Proc. Ind. Acad. Sci. (Math. Sci.) 104(2), 339–349 (1994)
4. Kiryakova, V.: Generalized fractional calculus and applications. Longman Scientific & Technical, Harlow and John Wiley & Sons, Inc., New York (1994)
5. Kober, H.: On fractional integrals and derivatives. Quart. J. Math. Oxford Ser. 11, 193–211 (1940)