“Nonstandard Finite Difference Schemes for Solving Systems of Two Linear Fractional Differential Equations: The Case of Real Eigenvalues”. Statistics, Optimization & Information Computing 14, no. 4 (July 30, 2025): 2041–2060. Accessed April 23, 2026. https://www.iapress.org/index.php/soic/article/view/2564.