A Boundary Value Problem for the Degenerated Elliptic Equation with Singular Coefficient and Spectral Parameter. Journal of Partial Differential Equations, [S. l.], v. 31, n. 3, p. 214–223, 2018. DOI: 10.4208/jpde.v31.n3.2. Disponível em: https://global-sci.com/index.php/jpde/article/view/4305. Acesso em: 5 dec. 2025.