HASAN, N. N.; JOHN, Z. Analytic Approach for Solving System of Fractional Differential Equations. Al-Mustansiriyah Journal of Science, [S. l.], v. 32, n. 1, p. 14–17, 2021. DOI: 10.23851/mjs.v32i1.929. Disponível em: https://mjs.uomustansiriyah.edu.iq/index.php/MJS/article/view/929. Acesso em: 1 oct. 2022.