“…For more details, one can see the monographs of Diethelm [8], Kilbas et al [12], Lakshmikantham et al [13], Miller and Ross [18], Podlubny [24] and Tarasov [25]. Moreover, fractional differential equations (inclusions) and optimal controls in Banach spaces are studied by Balachandran et al [2,3], Benchohra et al [4,5], N'Guérékata [21,22], Mophou and N'Guérékata [19], Wang et al [26,27] and Zhou et al [28][29][30] and etc.…”