TY  - BOOK
AU  - Gustafson, Karl E.
TI  - Introduction to partial differential equations and Hilbert space methods
SN  - 9780486612713
U1  - 515.353 GUS-K 
PY  - 1999///
CY  - New York
PB  - Dover
KW  - Hilber Spaceﾠ
KW  - Differential equations, Partialﾠ
ER  -