@article{ASENS_1991_4_24_2_141_0,
     author = {L\^e D\~{u}ng Tr\'ang and Michel, Fran\c{c}oise and Weber, Claude},
     title = {Courbes polaires et topologie des courbes planes},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {141--169},
     publisher = {Elsevier},
     volume = {4e s{\'e}rie, 24},
     number = {2},
     year = {1991},
     doi = {10.24033/asens.1623},
     mrnumber = {92b:32043},
     zbl = {0748.32018},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.1623/}
}