1.
Cabré X, Caffarelli LA. Regularity for viscosity solutions of fully nonlinear equations $F(D^2u) = 0$. TMNA [Internet]. 1995 Sep. 1 [cited 2025 Jul. 3];6(1):31-48. Available from: https://apcz.umk.pl/TMNA/article/view/TMNA.1995.030