Katzourakis, Nikos. “On the Dirichlet Problem for Fully Nonlinear Elliptic Hessian systems ”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 16, no. 3 (September 29, 2016): 707-727. Accessed February 20, 2026. https://journals.sns.it/index.php/annaliscienze/article/view/464.