AKGÜL, A.; INC, M.; BALEANU, D. On solutions of variable-order fractional differential equations. An International Journal of Optimization and Control: Theories & Applications (IJOCTA), [S. l.], v. 7, n. 1, p. 112–116, 2017. DOI: 10.11121/ijocta.01.2017.00368. Disponível em: http://ijocta.org/index.php/files/article/view/368. Acesso em: 3 apr. 2025.