TY  - BOOK
AU  - John, Fritz
TI  -  Partical differential equations/3rd ed
T2  - Applied mathematical science
U1  - 515.353 
PY  - 1978///
CY  - New York
PB  - Springer-Verlag
KW  - Laplace eqution
KW  - Hyperbolic equations
KW  - Parabolic equations
ER  -