TY - JOUR AU - R.W. Jr. Richardson TI - Principal Orbit Types for Algebraic Transformation Spaces in Characteristic Zero. JO - Inventiones mathematicae PY - 1972 SP - 6 EP - 14 VL - 16 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM_1972__16_142136/ ID - IM_1972__16_142136 ER -