@inproceedings{pavel2018a,
title={A family of quantum graph vertex couplings interpolating between different symmetries},
author={Pavel Exner, Ondej Turek, and Milo Tater},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191020140117005131822},
booktitle={Journal of Physics A: Mathematical and Theoretical},
volume={51},
number={28},
pages={285301},
year={2018},
}
Pavel Exner, Ondej Turek, and Milo Tater. A family of quantum graph vertex couplings interpolating between different symmetries. 2018. Vol. 51. In Journal of Physics A: Mathematical and Theoretical. pp.285301. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191020140117005131822.