%0 Journal Article %A R.W. Jr. Richardson %T Principal Orbit Types for Algebraic Transformation Spaces in Characteristic Zero. %J Inventiones mathematicae %D 1972 %P 6-14 %V 16 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1972__16_142136/ %F IM_1972__16_142136