Stability of Nonlinear Systems of Fractional Order Differential Equations. Baghdad Science Journal, Iraq, Baghdad, v. 7, n. 4, p. 1458–1461, 2010. DOI: 10.21123/bsj.2010.7.4.1458-1461. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/1124.. Acesso em: 6 may. 2024.