TY  - BOOK
AU  - Gustafson, Karl E.
TI  - Introduction to partial differential equations and Hilbert space methods
SN  - 0486612716
U1  - 515.353 
CY  - New York
PB  - Dover
KW  - Ecuaciones diferenciales parciales
KW  - Espacios de Hilbert
KW  - Series de Fourier
ER  -