@inproceedings{ravi1999recursions,
title={Recursions for characteristic numbers of genus one plane curves},
author={Ravi Vakil},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203601495413767},
booktitle={Arkiv for Matematik},
volume={39},
number={1},
pages={157-180},
year={1999},
}

Ravi Vakil. Recursions for characteristic numbers of genus one plane curves. 1999. Vol. 39. In Arkiv for Matematik. pp.157-180. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203601495413767.