@inproceedings{kazuaki2017spectral,
title={Spectral analysis of the subelliptic oblique derivative problem},
author={Kazuaki Taira},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20180301172035737595954},
booktitle={Arkiv for Matematik},
volume={55},
year={2017},
}