1. F. Mainardi and R. Gorenflo (2007). Time-fractional derivatives in relaxation processes: a tutorial survey, Fract. Calc. Appl. Anal.10, 269–388. [E-printarXiv:0701454]
2. K.B. Oldham and J. Spanier . (1974). The Fractional Calculus, Academic Press, New York.
3. B. Ross (Editor) (1975). Fractional Calculus and its Applications, Springer Verlag, Berlin.[Lecture Notes in Mathematics, Vol. 457]
4. S.G. Samko, A.A. Kilbas, and O.I. Marichev.(1993). Fractional Integrals and Derivatives,Theory and Applications, Gordon and Breach,Amsterdam. [English translation from the Russian, Nauka iTekhnika, Minsk, 1987]
5. I. Podlubny (1999). Fractional Differential Equations, Academic Press, San Diego. [Mathematics in Science and Engineering, Vol. 198][6] R. Hilfer (Editor) (2000). Fractional Calculus, Applications in Physics, World Scientific, Singapore.