@inproceedings{pierre2013macroscopic,
title={Macroscopic limits and phase transition in a system of self-propelled particles},
author={Pierre Degond, Amic Frouvelle, and Jian-Guo Liu},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170208222009908710321},
booktitle={Journal of Nonlinear Science},
volume={23},
number={3},
pages={427–456},
year={2013},
}

Pierre Degond, Amic Frouvelle, and Jian-Guo Liu. Macroscopic limits and phase transition in a system of self-propelled particles. 2013. Vol. 23. In Journal of Nonlinear Science. pp.427–456. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170208222009908710321.