@inproceedings{william1995counting,
title={Counting eigenvalues using coherent states with an application to Dirac and Schrödinger operators in the semi-classical limit},
author={William Desmond Evans, Roger T. Lewis, Heinz Siedentop, and Jan Philip Solovej},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203548895392668},
booktitle={Arkiv for Matematik},
volume={34},
number={2},
pages={265-283},
year={1995},
}
William Desmond Evans, Roger T. Lewis, Heinz Siedentop, and Jan Philip Solovej. Counting eigenvalues using coherent states with an application to Dirac and Schrödinger operators in the semi-classical limit. 1995. Vol. 34. In Arkiv for Matematik. pp.265-283. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203548895392668.