TY - JOUR AU - V. M. Ryabtseva TI - Values of the characteristic function of an isometric operator on the boundary, and the spectrum of its bounded orthogonal extension JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1969 SP - 74 EP - 78 IS - 7 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1969_7_a10/ LA - ru ID - IVM_1969_7_a10 ER -