LIU, Yuji. Multiple Positive Solutions of BVPs for Singular Fractional Differential Equations with Non-Caratheodory Nonlinearities. Mathematical Modelling and Analysis, [S. l.], v. 19, n. 3, p. 395–416, 2014. DOI: 10.3846/13926292.2014.925984. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/3301. Acesso em: 1 jun. 2025.