@inproceedings{mihaela2008virasoro,
  title={VIRASORO ACTIONS AND HARMONIC MAPS},
  author={Mihaela Vajiac, and Karen Uhlenbeck},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160909135711091358740},
  booktitle={Journal of Differential Geometry},
  volume={80},
  number={2},
  pages={327-341},
  year={2008},
}
             
            
                
Mihaela Vajiac, and Karen Uhlenbeck. VIRASORO ACTIONS AND HARMONIC MAPS. 2008. Vol. 80. In Journal of Differential Geometry. pp.327-341. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160909135711091358740.