Mohammed Belmekki, Kheira Mekhalfi, and Sotiris K. Ntouyas. “Semilinear Functional Differential Equations With Fractional Order and Finite Delay”. Malaya Journal of Matematik 1, no. 1 (September 1, 2012): 73–81. Accessed July 16, 2024. https://www.malayajournal.org/index.php/mjm/article/view/333.