TY  - BOOK
AU  - Arthurs ,A M .
TI  - Complementary variational principles / 
SN  - 0198535325
U1  - 515.62 
PY  - 1980///
CY  - Oxford : 
PB  - Clarendon press , 
KW  - BOUNDARY VALUE PROBLEMS
N1  - Includes index
ER  -