TY  - BOOK
AU  - Davies, Brian E
TI  - Linear operators and their spectra
T2  - Cambridge studies in advanced mathematics
SN  - 9780521866293
PY  - 2007///
CY  - New York
PB  - Cambridge university press
KW  - Fourier transforms
KW  - Perturbation theory
KW  - Pseudospectrum
N1  - Cambridge studies in advanced mathematics Vol. 106
ER  -