TY  - BOOK
AU  - Demyanov,V.F & Rubinov,A.M
ED  - Rubinov, A.M
TI  - Approximate methods in optimization problems
T2  - Modern analytic & computational methods in sci. & maths
U1  - 11.01 
PY  - 1970///
CY  - New York
PB  - American Elsevier 
ER  -