@inproceedings{clifford1975on,
title={On sections of some holomorphic families of closed Riemann surfaces},
author={Clifford J. Earle, and Irwin Kra},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203240350869206},
booktitle={Acta Mathematica},
volume={137},
number={1},
pages={49-79},
year={1975},
}
Clifford J. Earle, and Irwin Kra. On sections of some holomorphic families of closed Riemann surfaces. 1975. Vol. 137. In Acta Mathematica. pp.49-79. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203240350869206.