TY - JOUR AU - M. Sh. Birman AU - D. R. Yafaev TI - Spectral properties of the scattering matrix JO - Algebra i analiz PY - 1992 SP - 1 EP - 27 VL - 4 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AA_1992_4_6_a0/ LA - ru ID - AA_1992_4_6_a0 ER -