TY - JOUR AU - S. A. Smagin TI - Complex powers of hypoelliptic systems in~$\mathbf R^n$ JO - Sbornik. Mathematics PY - 1976 SP - 291 EP - 300 VL - 28 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1976_28_3_a1/ LA - en ID - SM_1976_28_3_a1 ER -