1. R. Hilfer, Applications of Fractional Calculus in Physics (Word Scientific, Singapore, 2000)
2. L. Debnath, Int. J. Math. Math. Sci. 54, 3413 (2003)
3. A. Kilbas, H.M. Srivastava, J.J. Trujillo, Theory and Application of Fractional Differential Equations, in North Holland Mathematics Studies, Vol. 204 (Elsevier Science, 2006)
4. R.L. Magin, Fractional Calculus in Bioengineering (Begell House Publishers, 2006)
5. I. Podlubny, Fractional Differential Equations, Mathematics in Science and Engineering (Academic Press, New York, 1999)