[1]
“Nonlinear Degenerate Oblique Boundary Value Problems for Second Order Fully Nonlinear Elliptic Equations”, J. Part. Diff. Eq., vol. 3, no. 2, pp. 55–62, Mar. 1990, Accessed: Dec. 06, 2025. [Online]. Available: https://global-sci.com/index.php/jpde/article/view/3659