Rashidinia, Jalil, et al. “Quintic and Septic $C^2$-Spline Methods for Initial Fractional Differential Equations: Quintic and Septic $C^2$-Spline Methods”. Journal of Innovative Applied Mathematics and Computational Sciences, vol. 3, no. 1, June 2023, pp. 35-48, doi:10.58205/jiamcs.v3i1.58.