1. Samko SG, Kilbas AA, Marichev IO: Fractional Integrals and Derivatives Theory and Applications. Gordon & Breach, Yverdon; 1993.
2. Podlubny I: Fractional Differential Equations. Academic Press, San Diego; 1999.
3. Kilbas AA, Srivastava HM, Trujillo JJ North-Holland Mathematics Studies 204. In Theory and Applications of Fractional Differential Equations. Elsevier, Amsterdam; 2006.
4. Lakshmikantham V, Leela S, Vasundhara J: Theory of Fractional Dynamic Systems. Cambridge Academic Publishers, Cambridge; 2009.
5. Diethelm K: The Analysis of Fractional Differential Equations. Springer, New York; 2010.