@article{ASNSP_2005_5_4_4_557_0,
     author = {Faraco, Daniel and Zhong, Xiao},
     title = {Geometric rigidity of conformal matrices},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {557--585},
     publisher = {Scuola Normale Superiore, Pisa},
     volume = {Ser. 5, 4},
     number = {4},
     year = {2005},
     mrnumber = {2207734},
     zbl = {1170.30308},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_2005_5_4_4_557_0/}
}