@inproceedings{ludovic2012closing, title={CLOSING GEODESICS IN C1 TOPOLOGY}, author={Ludovic Rifford}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160913230613857897936}, booktitle={Journal of Differential Geometry}, volume={91}, number={3}, pages={361-381}, year={2012}, }