LIU, Yuji. Solvability of boundary value problems for singular quasi-Laplacian differential equations on the whole line. Mathematical Modelling and Analysis, [S. l.], v. 17, n. 3, p. 423–446, 2012. DOI: 10.3846/13926292.2012.686068. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/4882. Acesso em: 28 may. 2025.