The Dirichlet Problems for a Class of Fully Nonlinear Elliptic Equations Relative to the Eigenvalues of the Hessian. J. Part. Diff. Eq. [Internet]. 1992 May 1 [cited 2025 Dec. 5];5(2):53-68. Available from: https://www.global-sci.com/index.php/jpde/article/view/3711