Caputo type modification of the Erdelyi-Kober fractional implicit differential equations with retarded and advanced arguments in Banach spaces. Nonlinear Studies, [S. l.], v. 27, n. 1, 2020. Disponível em: https://nonlinearstudies.com/index.php/nonlinear/article/view/2148. Acesso em: 20 sep. 2025.