@inproceedings{g2004topologically,
title={Topologically nontrivial quantum layers},
author={G Carron, Pavel Exner, and D Krejik},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191020122656969607567},
booktitle={Journal of Mathematical Physics},
volume={45},
number={2},
pages={774-784},
year={2004},
}
G Carron, Pavel Exner, and D Krejik. Topologically nontrivial quantum layers. 2004. Vol. 45. In Journal of Mathematical Physics. pp.774-784. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191020122656969607567.