@inproceedings{pavel2017on,
title={On the spectrum of leaky surfaces with a potential bias},
author={Pavel Exner},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191020135230663304794},
booktitle={arXiv preprint arXiv:1701.06288},
year={2017},
}

Pavel Exner. On the spectrum of leaky surfaces with a potential bias. 2017. In arXiv preprint arXiv:1701.06288. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191020135230663304794.