@inproceedings{yi2009separatrix,
title={Separatrix Map Analysis for Fractal Scatterings in Weak Interactions of Solitary Waves},
author={Yi Zhu, Richard Haberman, and Jianke Yang},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220421104659003535076},
year={2009},
}