1. Nonlinear second-order elliptic equations, IV. Starshaped compact Weingarten hypersurfaces,;L. Caffarelli;Current topics in partial differential equations,1986
2. Nonlinear second-order elliptic equations V. The Dirichlet problem for Weingarten Hypersurfaces,;L. Caffarelli;Comm. Pure Appl. Math.,1988
3. Elliptic Partial Differential Equations of Second Order,;D. Gilbarg;3rd ed.,2001
4. On the isometric embedding of surfaces with Gauss curvature changing sign cleanly,;Q. Han;Comm. Pure Appl. Math.,2005
5. Local solutions to a class of Monge-Ampère equations of the mixed type,;Q. Han;Duke Math. J.,2007