%0 Journal Article %A Fumio Ichikawa %T Finitely Determined Singularities of Formal Vector Fields. %J Inventiones mathematicae %D 1982 %P 199-214 %V 66 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1982__66_142877/ %F IM_1982__66_142877