@inproceedings{bong2006genus,
title={Genus Zero Modular Functions},
author={Bong H. Lian, and Joshua L. Wiczer},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160828150207767920482},
year={2006},
}

Bong H. Lian, and Joshua L. Wiczer. Genus Zero Modular Functions. 2006. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160828150207767920482.