@inproceedings{r.1988triple,
title={Triple covers in positive characteristic},
author={R. Pardini},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203530801215521},
booktitle={Arkiv for Matematik},
volume={27},
number={1},
pages={319-341},
year={1988},
}