1. Elliptic partial differential equations of second order;Gilbarg,1983
2. Local estimates for the gradient of non-parametric surfaces of prescribed mean curvature;Bombieri;Comm Pure Appl Math,1973
3. Semicontinuity, relaxation and integral representation in the calculus of variations;Buttazzo,1989
4. Equilibrium capillary surfaces;Finn,1986
5. Analyse convexe et problèmes variationnels;Ekeland,1974