TY  - BOOK
AU  - Wendland W L
TI  - Elliptic systems in the plane
T2  - Monographs and Studies in Mathematics
U1  - B392L8, L9 
PY  - 1979///
CY  - London
PB  - Pitman Pub        
KW  -  Boundary value problems
KW  -  Elliptic
KW  - Differential equtions
ER  -