%0 Journal Article %A T. Urabe %T Tie transformations of Dynkin graphs and singularities on quartic surfaces. %J Inventiones mathematicae %D 1990 %P 207-230 %V 100 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1990__100_2_143783/ %F IM_1990__100_2_143783