@inproceedings{l.1984the,
title={The Dirichlet problem for nonlinear second order elliptic equations, III: Functions of the eigenvalues of the Hessian},
author={L. Caffarelli, L. Nirenberg, and J. Spruck},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203305369025379},
booktitle={Acta Mathematica},
volume={155},
number={1},
pages={261-301},
year={1984},
}
L. Caffarelli, L. Nirenberg, and J. Spruck. The Dirichlet problem for nonlinear second order elliptic equations, III: Functions of the eigenvalues of the Hessian. 1984. Vol. 155. In Acta Mathematica. pp.261-301. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203305369025379.