TY  - BOOK
AU  - Edmunds D E
AU  - Evans W D
TI  - Spectral theory and differential operators
U1  - 515.7222 
PY  - 1987///
CY  - Oxford
PB  - Clarendon Press
KW  - Differential calculus
KW  - Operator theory
KW  - Spectral theory
ER  -