00466nam a2200133Ia 4500082002000000100003100020245013700051260003400188300001600222490003300238500000500271700002900276700002700305  a515.72bIo64.IS  aIohvidov, I. S. and Others  aIntroduction to the spectral theory of operators in spaces with an indefinite metricbcBy I. S. Iohvidov, M. G. Krein and H. Langer  aBerlinbAkademie-Verlagc1982  a120p. Bibl.  aMathematical researchv v. 9  a  aKrein, M. G. ; jt. auth.  aLanger, H. ; jt. auth.