TY  - BOOK
AU  - Gustafson,Karl E.
TI  - Introduction to partial differential equations and Hilbert space methods.- 3rd ed.
SN  - 0486612716 (pbk.)
PY  - 1999///
CY  - Mineola, N.Y.
PB  - Dover Publications
KW  - Differential equations, Partial
KW  - Hilbert space
N1  - Includes indexes
ER  -