@article{IM_1989__97_2_143710,
     author = {Z. Ran},
     title = {Enumerative geometry of singular plane curves.},
     journal = {Inventiones mathematicae},
     pages = {447--466},
     publisher = {mathdoc},
     volume = {97},
     number = {2},
     year = {1989},
     zbl = {0702.14040},
     url = {http://geodesic.mathdoc.fr/item/IM_1989__97_2_143710/}
}