1. Das, S.: Functional Fractional Calculus for System Identification and Control. Springer, Berlin Heidelberg, New York (2008)
2. Machado, J.A.T., Jesus, I.S., Barbosa, R., Silva, M., Rei, C.: Application of fractional calculus in engineering. In: Peixoto, M., Pinto, A., Rand, D. (eds.) Dynamics, Games and Science. I Springer Proceedings in Mathematics, vol. 1, pp. 619–629. Springer, Berlin, Heidelberg (2011)
3. Choi, J., Maccamy, R.: Fractional order Volterra equations with applications to elasticity. J. Math. Anal. Appl. 139, 448–464 (1989)
4. Eringen, A.C.: A continuum theory of swelling porous elastic soils. Int. J. Eng. Sci. 32, 1337–1349 (1994)
5. Karalis, K.: On the elastic deformation of non-saturated swelling soils. Acta Mech. 84, 19–45 (1990)