TY  - BOOK
AU  - Bernfeld, Stephen R.
TI  - AN INTRODUCTION TO NONLINEAR BOUNDARY VALUE PROBLEMS
U1  - 515.35 
PY  - 1974///
CY  - New York
PB  - Academic Press
KW  - Boundary Value Problems
KW  - Nonlinear Theories
N1  - Bibliography : P. 368-383
ER  -