@article{IM_1990__100_2_143783,
     author = {T. Urabe},
     title = {Tie transformations of {Dynkin} graphs and singularities on quartic surfaces.},
     journal = {Inventiones mathematicae},
     pages = {207--230},
     year = {1990},
     volume = {100},
     number = {2},
     zbl = {0667.14017},
     url = {http://geodesic.mathdoc.fr/item/IM_1990__100_2_143783/}
}