@inproceedings{felix2000non-existence,
title={Non-existence of time-periodic solutions of the Dirac equation in a Reissner-Nordstrm black hole background},
author={Felix Finster, Joel Smoller, and Shing-Tung Yau},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224203830182663092},
booktitle={Journal of Mathematical Physics},
volume={41},
number={4},
pages={2173-2194},
year={2000},
}

Felix Finster, Joel Smoller, and Shing-Tung Yau. Non-existence of time-periodic solutions of the Dirac equation in a Reissner-Nordstrm black hole background. 2000. Vol. 41. In Journal of Mathematical Physics. pp.2173-2194. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224203830182663092.