ZHU, Hui; NIU, Jing; ZHANG, Ruimin; LIN, Yingzhen. A new approach for solving nonlinear singular boundary value problems. Mathematical Modelling and Analysis, [S. l.], v. 23, n. 1, p. 33–43, 2018. DOI: 10.3846/mma.2018.003. Disponível em: https://transport.vilniustech.lt/index.php/MMA/article/view/225. Acesso em: 14 aug. 2025.