1. Podlubny, I.: Fractional Differential Equations. Academic Press, New York (1999)
2. Miller, K.S., Ross, B.: An Introduction to the Fractional Calculus and Fractional, Differential Equations. Willey, New York (1993)
3. Whitham, G.B.: Variational methods and applications to water wave. Proc. R. Soc. Lond. Ser. A 299(6), 6–25 (1967)
4. Kilbas, A.A., Srivastava, H.M., Trujillo, J.J.: Theory and Applications of Fractional Differential Equations. Elsevier, Amsterdam (2006)
5. Kumar, S.: Numerical computation of time-fractional Fokker–Planck equation arising in solid state physics and circuit theory. Z. Naturforsch. A 68, 777–784 (2013)