@article{NUMA_1982__39_132786,
     author = {H. van de Vel},
     title = {The {Haar} {Condition} and {Multiplicity} of {Zeros.}},
     journal = {Numerische Mathematik},
     pages = {139--154},
     publisher = {mathdoc},
     volume = {39},
     year = {1982},
     zbl = {0489.41028},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1982__39_132786/}
}