@article{CMH_1986__61_140050,
     author = {Paulo Sad and Dominique Cerveau},
     title = {Probl\`emes de modules pour les formes diff\'erentielles singuli\`eres dans le plan complexe.},
     journal = {Commentarii mathematici Helvetici},
     pages = {222--253},
     publisher = {mathdoc},
     volume = {61},
     year = {1986},
     zbl = {0604.58004},
     url = {http://geodesic.mathdoc.fr/item/CMH_1986__61_140050/}
}