@inproceedings{gao2021gravitational,
title={Gravitational instantons with faster than quadratic curvature decay. I},
author={Gao Chen, and Xiuxiong Chen},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220310114513134302927},
booktitle={Acta Mathematica},
volume={227},
number={2},
pages={263-307},
year={2021},
}

Gao Chen, and Xiuxiong Chen. Gravitational instantons with faster than quadratic curvature decay. I. 2021. Vol. 227. In Acta Mathematica. pp.263-307. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220310114513134302927.