TY  - BOOK
AU  - Helmberg, Gilbert
TI  - Introduction to spectral theory in hilbert space
SN  - 9780486466224
U1  - 515.7222 
PY  - 1997///
CY  - New York
PB  - Dover Publications Inc.
KW  - Mathematics
KW  - Spectral theory
KW  - Hilbert space
KW  - Linear operators
N1  - Including bibliography and index
ER  -