SAHIJWANI, L. .; SUKAVANAM, N. Approximate controllability for systems of fractional nonlinear differential equations involving Riemann-Liouville derivatives. An International Journal of Optimization and Control: Theories & Applications (IJOCTA), [S. l.], v. 13, n. 1, p. 59–67, 2023. DOI: 10.11121/ijocta.2023.1178. Disponível em: http://ijocta.org/index.php/files/article/view/1178. Acesso em: 5 jan. 2025.