TY - JOUR AU - J. Igusa TI - On Certain Representations of Semi-Simple Algebraic Groups and the Arithmetic of the Corresponding Invariants. JO - Inventiones mathematicae PY - 1971 SP - 62 EP - 94 VL - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM_1971__12_142067/ ID - IM_1971__12_142067 ER -