Mathematical Inequalities & Applications · Volume 8, Issue 1 On an estimate related to the Hessian and application to an oblique derivative problem 08-11 Pages 111-127 DOI 10.7153/mia-08-11 Downloads Short PDF Full PDF PNG Authors Sofia Giuffrè Keywords Hessian estimate nonlinear elliptic equations tangential oblique derivative problem strong solutions Subject classes 35J65 35R05