TY - JOUR AU - E. V. Troitskii TI - An exact formula for the index of an equivariant $C^*$-elliptic operator JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1992 SP - 178 EP - 182 VL - 193 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1992_193_a33/ LA - ru ID - TM_1992_193_a33 ER -