TY  - BOOK
AU  - Kleinman, Ralph
AU  - Kress, Rainer
TI  - Direct and inverse boundary value problems
SN  - 363143765X
U1  - QA379 .D6 1991 515/.35 
PY  - 1991///
CY  - Bern
PB  - Peter Lang
KW  - Boundary value problems - Congresses
ER  -