TY  - BOOK
AU  - John, Fritz
TI  - Partial differential equations
SN  - 9783540906094
U1  - 515.35 
PY  - 1982///
CY  - New York
PB  - Springer
KW  - Differential equations
KW  - Mathematics
N1  - The single first-order equation --
Second-order equations: hyperbolic equations for functions of two independent variables --
Characteristic manifolds and the Cauchy problem --
The Laplace equation --
Hyperbolic equations in higher dimensions --
Higher-order elliptic equations with constant coefficients --
Parabolic equations --
H. Lewy's example of a linear equation without solutions
ER  -