TY  - BOOK
AU  - Girsanov, Igor Vladimirovich
AU  - Poljak, B. T. ; ed.
AU  - Louvish, D. ; tr.
TI  - Lectures on mathematical theory of extremum problems
T2  - Lecture notes in Economics and Mathematical systems
U1  - 515.64 
PY  - 1972///
CY  - Berlin
PB  - Springer-Verlag
N1  - "Translated from the Russin by D. Louvish"
ER  -