@inproceedings{j1989a,
title={A non-relativistic model of two-particle decay IV. Relation to the scattering theory, spectral concentration, and bound states},
author={J Dittrich, and Pavel Exner},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191020134858382474785},
booktitle={Czechoslovak Journal of Physics B},
volume={39},
number={2},
pages={121-138},
year={1989},
}

J Dittrich, and Pavel Exner. A non-relativistic model of two-particle decay IV. Relation to the scattering theory, spectral concentration, and bound states. 1989. Vol. 39. In Czechoslovak Journal of Physics B. pp.121-138. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191020134858382474785.