TATAR, Nasser-eddine. On a second-order differential problem with fractional derivatives of order greater than one. Mathematical Modelling and Analysis, [S. l.], v. 18, n. 1, p. 53–65, 2013. DOI: 10.3846/13926292.2013.756833. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/4097. Acesso em: 10 jul. 2025.