TY - JOUR AU - A. M. Vershik TI - A~geometric theory of states, von Neumann boundary, duality of $C^*$-algebras JO - Zapiski Nauchnykh Seminarov POMI PY - 1972 SP - 147 EP - 154 VL - 29 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1972_29_a16/ LA - ru ID - ZNSL_1972_29_a16 ER -