TY  - BOOK
AU  - Davies,E.B.
TI  - Spectral Theory and Differential Operators 
SN  - 0521472504
U1  - 515.7242 
PY  - 1995///
CY  - Cambridge, New York
PB  - Cambridge University Press
KW  - Spectral theory (Mathematics)
KW  - Elliptic operators
UR  - http://www.loc.gov/catdir/description/cam026/94021008.html
UR  - http://www.loc.gov/catdir/toc/cam027/94021008.html
ER  -