Fadhel FS, Khayoon HH. Numerical Solution of Ordinary Differential Equations of Fractional Order Using Variable Step Size Method. Al-Nahrain J. Sci. [Internet]. 2018 Oct. 25 [cited 2026 May 22];(1):143-9. Available from: https://mail.anjs.edu.iq/index.php/anjs/article/view/2026