@inproceedings{david2020torsion,
title={Torsion points, Pell’s equation, and integration in elementary terms},
author={David Masser, and Umberto Zannier},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220310105728989468918},
booktitle={Acta Mathematica},
volume={225},
number={2},
pages={227-312},
year={2020},
}

David Masser, and Umberto Zannier. Torsion points, Pell’s equation, and integration in elementary terms. 2020. Vol. 225. In Acta Mathematica. pp.227-312. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220310105728989468918.