@inproceedings{tobias2011new,
title={New monotonicity formulas for Ricci curvature and applications. I},
author={Tobias Holck Colding},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203359717120762},
booktitle={Acta Mathematica},
volume={209},
number={2},
pages={229-263},
year={2011},
}

Tobias Holck Colding. New monotonicity formulas for Ricci curvature and applications. I. 2011. Vol. 209. In Acta Mathematica. pp.229-263. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203359717120762.