@inproceedings{frédéric1993resonances,
title={Resonances for perturbations of a semiclassical periodic Schrödinger operator},
author={Frédéric Klopp},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203543782969628},
booktitle={Arkiv for Matematik},
volume={32},
number={2},
pages={323-371},
year={1993},
}
Frédéric Klopp. Resonances for perturbations of a semiclassical periodic Schrödinger operator. 1993. Vol. 32. In Arkiv for Matematik. pp.323-371. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203543782969628.