TY  - BOOK
AU  - Borthwick, David
TI  - Spectral theory: basic concepts and applications
T2  - Axler, Sheldon 
SN  - 9783030380045
U1  - 515.7222 B6486s 
PY  - 2020///
CY  - Switzerland
PB  - Springer
KW  - Differential equations, Partial
KW  - Operator theory
KW  - Functional analysis
ER  -