TY  - BOOK
AU  - Clements David L
TI  - Boundary value problems governed by second order elliptic systems
T2  - Monographs and studies in mathematics; 12
U1  - B334,1,2, M1 
PY  - 1981///
CY  - Boston
PB  - Pitman Publisher        
KW  -  Differential equations
KW  - Boundary value problems
N1  - Bibliography 158-160p
ER  -