Salim, Abdelkrim, et al. “Caputo Fractional $q$-Difference Equations in Banach Spaces”. Journal of Innovative Applied Mathematics and Computational Sciences, vol. 3, no. 1, Apr. 2023, pp. 1-14, https://jiamcs.centre-univ-mila.dz/index.php/jiamcs/article/view/v3i1_67.