Mardanov, M.J., Y.A. Sharifov, and Humbet Aliyev. “Existence and Uniqueness of Solutions for Nonlinear Fractional Integro-Differential Equations With Nonlocal Boundary Conditions”. European Journal of Pure and Applied Mathematics 15, no. 2 (April 30, 2022): 726–735. Accessed November 26, 2022. https://ejpam.com/index.php/ejpam/article/view/4366.