El-Sayed A. M. A. and Abd El-Salam Sh. A., On the existence of strongly continuous solution $~u\in C_{1-\alpha}(I,E)~$ of a weighted Cauchy type problem of a fractional-order differential equation, 2017 (2017), Article ID 5 (10 July, 2017)

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El-Sayed A. M. A. and Abd El-Salam Sh. A., On the existence of strongly continuous solution $~u\in C_{1-\alpha}(I,E)~$ of a weighted Cauchy type problem of a fractional-order differential equation, Journal of Fixed Point Theory, 2017 (2017), Article ID 5.