Mohammed Al-Refai (2025) “Fundamental Results on Systems of Fractional Differential Equations Involving Caputo-Fabrizio Fractional Derivative”, Jordan Journal of Mathematics and Statistics, 13(3), pp. 389–399. Available at: https://jjms.yu.edu.jo/index.php/jjms/article/view/886 (Accessed: 17 July 2025).