@inproceedings{g.1988a,
title={A pointwise regularity theory for the two-obstacle problem},
author={G. Dal Maso, U. Mosco, and M. A. Vivaldi},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203312783680433},
booktitle={Acta Mathematica},
volume={163},
number={1},
pages={57-107},
year={1988},
}
G. Dal Maso, U. Mosco, and M. A. Vivaldi. A pointwise regularity theory for the two-obstacle problem. 1988. Vol. 163. In Acta Mathematica. pp.57-107. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203312783680433.