TY  - BOOK
AU  - Ioffe,A.D & Tihomirov,V.M
ED  - Tihomirov, V.M
TI  - Theory of external problems
T2  - Studies in mathematics & its applications 6
SN  - 044851674
U1  - 4.13+5.07 
PY  - 1979///
CY  - Amsterdam
PB  - North-Holland Pub. Co.
ER  -