REFERENCES
[1] M. Benchohra, J. Henderson, S.K. Ntouyas, A. Ouahab, Existence results for fractional order
functional differential equations with infinite delay, J. Math. Anal. Appl. 338 (2008) 1340–1350.
[2] K. Deng, Exponential decay of solutions of semilinear parabolic equations with nonlocal initial
conditions, J. Math. Anal. Appl. 179 (1993), 630–637.
[3] K. Diethelm, A.D. Freed, On the solution of nonlinear fractional differential equations used in
the modeling of viscoplasticity, in: F. Keil, W. Mackens, H. Vob, J. Werther (Eds.), Scientific
Computing in Chemical Engineering II: Computational Fluid Dynamics, Reaction Engineering,
and Molecular Properties, Springer, Heidelberg, 1999, pp. 217–224.
[4] K. Diethelm, N.J. Ford, Multi-order fractional differential equations and their numerical solution,
Appl. Math. Comput. 154 (2004) 621–640.
[5] V. Lakshmikantham, A. S. Vatsala, Basic theory of fractional differential equations, Nonlinear
Anal. doi:10.1016/j.na.2007.08.042 (In Press).
[6] V. Lakshmikantham, Theory of fractional functional differential equations, Nonlinear Anal.
doi:10.1016/j.na.2007.09.025 (In Press).
[7] V. Lakshmikantham, A. S. Vatsala, Theory of fractional differential inequalities and applications,
Commun. Appl. Anal. 11(2007) 395–402.
[8] V. Lakshmikantham, M.R.M. Rao, Theory of Integro-Differential Equations, Gordon & Breach,
London, 1995.
[9] K.S. Miller, B. Ross, An Introduction to the Fractional Calculus and Differential Equations,
John Wiley, New York, 1993.
[10] G.M. N’Guerekata, A Cauchy problem for some fractional abstract differential equation with
non local conditions, Nonlinear Anal. doi:10.1016/j.na.2008.02.087 (In Press).
[11] I. Podlubny, Fractional Differential Equations, Academic Press, San Diego, 1999.
[12] S.G. Samko, A.A. Kilbas, O.I. Marichev, Fractional Integrals and Derivatives, Theory and
Applications, Gordon and Breach, Yverdon, 1993.