@article{TSG_2004-2005__23__9_0,
     author = {Bonsante, Francesco},
     title = {Constant curvature $(2+1)$-spacetimes and projective structures},
     journal = {S\'eminaire de th\'eorie spectrale et g\'eom\'etrie},
     pages = {9--48},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {23},
     year = {2004-2005},
     doi = {10.5802/tsg.230},
     zbl = {1104.83031},
     mrnumber = {2270222},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/tsg.230/}
}