[1] Abbas, S., Agarwal, R. P., Benchohra, M.: 
Darboux problem for impulsive partial hyperbolic differential equations of fractional order with variable times and infinite delay.  Nonlinear Anal. Hybrid Syst. 4 (2010), 818–829. 
MR 2680249 | 
Zbl 1204.35171 
[2] Abbas, S., Benchohra, M.: 
Partial hyperbolic differential equations with finite delay involving the Caputo fractional derivative.  Commun. Math. Anal. 7 (2009), 62–72. 
MR 2535015 | 
Zbl 1178.35371 
[3] Abbas, S., Benchohra, M.: 
Upper and lower solutions method for the Darboux problem for fractional order partial differential inclusions.  Int. J. Modern Math. 5, 3 (2010), 327–338. 
MR 2779058 | 
Zbl 1244.35157 
[4] Abbas, S., Benchohra, M.: 
Upper and lower solutions method for impulsive partial hyperbolic differential equations with fractional order.  Nonlinear Anal. Hybrid Syst. 4 (2010), 406–413. 
MR 2645856 | 
Zbl 1202.35340 
[5] Abbas, S., Benchohra, M.: 
The method of upper and lower solutions for partial hyperbolic fractional order differential inclusions with impulses.  Discuss. Math. Differ. Incl. Control Optim. 30, 1 (2010), 141–161. 
DOI 10.7151/dmdico.1116 | 
MR 2682404 | 
Zbl 1203.26005 
[6] Abbas, S., Benchohra, M., Górniewicz, L.: 
Existence theory for impulsive partial hyperbolic functional differential equations involving the Caputo fractional derivative.  Sci. Math. Jpn. e-2010 (2010), 271–282, online. 
MR 2666846 | 
Zbl 1200.26004 
[7] Abbas, S., Benchohra, M., N’Guérékata, G. M.: 
Topics in Fractional Differential Equations.  Developments in Mathematics 27, Springer, New York, 2012. 
MR 2962045 | 
Zbl 1273.35001 
[8] Abbas, S., Benchohra, M., Nieto, J. J.: 
Global uniqueness results for fractional order partial hyperbolic functional differential equations.  Adv. Differ. Equations ID 379876, doi:10.1155/2011/379876 (2011), 1–25, online. 
MR 2774251 | 
Zbl 1217.35005 
[9] Abbas, S., Benchohra, M., Vityuk, A. N.: 
On fractional order derivatives and Darboux problem for implicit differential equations.  Fract. Calc. Appl. Anal. 15, 2 (2012), 168–182. 
MR 2897771 
[12] Benchohra, M., Graef, J. R., Hamani, S.: 
Existence results for boundary value problems of nonlinear fractional differential equations with integral conditions.  Appl. Anal. 87, 7 (2008), 851–863. 
DOI 10.1080/00036810802307579 | 
MR 2458962 
[13] Benchohra, M., Hamani, S., Ntouyas, S. K.: 
Boundary value problems for differential equations with fractional order.  Surv. Math. Appl. 3 (2008), 1–12. 
MR 2390179 | 
Zbl 1157.26301 
[14] Benchohra, M., Henderson, J., Ntouyas, S. K.: 
Impulsive Differential Equations and Inclusions.  Hindawi Publishing Corporation, Vol 2, New York, 2006. 
MR 2322133 | 
Zbl 1130.34003 
[15] Benchohra, M., Henderson, J., Ntouyas, S. K., Ouahab, A.: 
Existence results for functional differential equations of fractional order.  J. Math. Anal. Appl. 338 (2008), 1340–1350. 
DOI 10.1016/j.jmaa.2007.06.021 | 
MR 2386501 
[17] Glockle, W. G., Nonnenmacher, T. F.: 
A fractional calculus approach of selfsimilar protein dynamics.  Biophys. J. 68 (1995), 46–53. 
DOI 10.1016/S0006-3495(95)80157-8 
[19] Hilfer, R.: 
Applications of Fractional Calculus in Physics.  World Scientific, Singapore, 2000. 
MR 1890104 | 
Zbl 0998.26002 
[20] Kilbas, A. A., Srivastava, H. M., Trujillo, J. J.: 
Theory and Applications of Fractional Differential Equations.  North-Holland Mathematics Studies 204, Elsevier Science B.V., Amsterdam, 2006. 
MR 2218073 | 
Zbl 1092.45003 
[22] Lakshmikantham, V., Bainov D. D., Simeonov, P. S.: 
Theory of Impulsive Differntial Equations.  World Scientific, Singapore, 1989. 
MR 1082551 
[24] Mainardi, F.: 
Fractional calculus: Some basic problems in continuum and statistical mechanics.  In: Carpinteri, A., Mainardi, F. (eds) Fractional Calculus in Continuum Mechanics Springer-Verlag, Wien, 1997, 291–348. 
MR 1611587 
[25] Metzler, F., Schick, W., Kilian, H. G., Nonnenmacher, T. F.: 
Relaxation in filled polymers: A fractional calculus approach.  J. Chem. Phys. 103 (1995), 7180–7186. 
DOI 10.1063/1.470346 
[26] Miller, K. S., Ross, B.: 
An Introduction to the Fractional Calculus and Differential Equations.  John Wiley, New York, 1993. 
MR 1219954 
[27] Oldham, K. B., Spanier, J.: 
The Fractional Calculus.  Academic Press, New York, London, 1974. 
MR 0361633 | 
Zbl 0292.26011 
[29] Podlubny, I., Petraš, I., Vinagre, B. M., O’Leary, P., Dorčak, L.: 
Analogue realizations of fractional-order controllers. fractional order calculus and its applications.  Nonlinear Dynam. 29 (2002), 281–296. 
MR 1926477 
[30] Samko, S. G., Kilbas, A. A., Marichev, O. I.: 
Fractional Integrals and Derivatives. Theory and Applications.  Gordon and Breach, Yverdon, 1993. 
MR 1347689 | 
Zbl 0818.26003 
[32] Vityuk, A. N.: 
Existence of solutions of partial differential inclusions of fractional order.  Izv. Vyssh. Uchebn., Ser. Mat. 8 (1997), 13–19. 
MR 1485123 
[33] Vityuk, A. N., Golushkov, A. V.: 
Existence of solutions of systems of partial differential equations of fractional order.  Nonlinear Oscil. 7, 3 (2004), 318–325. 
DOI 10.1007/s11072-005-0015-9 | 
MR 2151816