%0 Journal Article %A N.I. Shepherd-Barron %T Apolarity and its applications. %J Inventiones mathematicae %D 1989 %P 433-444 %V 97 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1989__97_2_143709/ %F IM_1989__97_2_143709