KRIM, Salim, Saïd ABBAS, Mouffak BENCHOHRA, and Juan J. NIETO. “Implicit Caputo-Fabrizio Fractional Differential Equations With Delay”. Studia Universitatis Babeș-Bolyai Mathematica 68, no. 4 (December 11, 2023): 727–742. Accessed February 5, 2025. https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/6732.