TY  - BOOK
AU  - Levitan, B. M.
AU  - Saribekovich, Sargsian Ishkan
TI  - INTRODUCTION TO SPECTRAL THEORY
U1  - 515.7222 
PY  - 1975///
CY  - Providence
PB  - American Mathematical Society
KW  - Boundary Value Problems
KW  - Spectral Theory (Mathematics)
KW  - Selfadjoint Operators
ER  -