%0 Journal Article %A Urbas, John %T Nonlinear oblique boundary value problems for hessian equations in two dimensions %J Annales de l'I.H.P. Analyse non linéaire %D 1995 %P 507-575 %V 12 %N 5 %I Gauthier-Villars %U http://www.numdam.org/item/AIHPC_1995__12_5_507_0/ %G en %F AIHPC_1995__12_5_507_0