TY  - BOOK
AU  - Tveito,Aslak
AU  - Winther,Ragnar
TI  - Introduction to partial differential equations
SN  - 9788184894806
U1  - 515.353 
PY  - 2005///
CY  - Berlin, New York
PB  - Springer
KW  - Differential equations, Partial
ER  -