SRIVASTAVA, Vineet. Approximate analytical solution of linear and nonlinear fractional delay differential equations using new variational iteration method. Open Science Journal, [S. l.], v. 5, n. 4, 2020. DOI: 10.23954/osj.v5i4.2626. Disponível em: https://osjournal.org/ojs/index.php/OSJ/article/view/2626. Acesso em: 12 sep. 2025.