Atangana, Abdon, and Ilknur Koca. “Witte’s Conditions for Uniqueness of Solutions to a Class of Fractal-Fractional Ordinary Differential Equations”. An International Journal of Optimization and Control: Theories & Applications (IJOCTA) 14, no. 4 (October 9, 2024): 322–335. Accessed February 2, 2025. http://ijocta.org/index.php/files/article/view/1639.