TY  - BOOK
AU  - Iohvidov, I. S. and Others
AU  - Krein, M. G. ; jt. auth.
AU  - Langer, H. ; jt. auth.
TI  - Introduction to the spectral theory of operators in spaces with an indefinite metric
T2  - Mathematical research
U1  - 515.72 
PY  - 1982///
CY  - Berlin
PB  - Akademie-Verlag
ER  -