@article{AIF_1990__40_4_913_0,
     author = {Troyanov, Marc},
     title = {Coordonn\'ees polaires sur les surfaces riemanniennes singuli\`eres},
     journal = {Annales de l'Institut Fourier},
     pages = {913--937},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {40},
     number = {4},
     year = {1990},
     doi = {10.5802/aif.1241},
     zbl = {0711.53017},
     mrnumber = {1096597},
     language = {fr},
     url = {http://www.numdam.org/articles/10.5802/aif.1241/}
}