@article{IM_1977__40_142481,
     author = {B. Teissier},
     title = {Vari\'et\'es polaires. {I.} {Invariants} polaires des singularit\'es d'hypersurfaces.},
     journal = {Inventiones mathematicae},
     pages = {267--292},
     year = {1977},
     volume = {40},
     zbl = {0446.32002},
     url = {http://geodesic.mathdoc.fr/item/IM_1977__40_142481/}
}