TY  - BOOK
AU  - Bernfeld, stephen R
AU  - Lakshmikantham, V
TI  - Introduction to nonlinear boundary value problems
U1  - 517.954 
PY  - 1974///
CY  - 
PB  - New York
KW  - Functional equations
KW  - Linear equations
KW  - Partial differential equations
KW  - Dynamical systems
ER  -