TY  - BOOK
AU  - Hillier.
TI  - Introduction to operations research, seventh edition
U1  - 658 L7161 I 
PY  - 2001///
CY  - [S.l.]
PB  - McGraw-Hill
UR  - http://www.amazon.com/exec/obidos/ASIN/B001F0T7M6/chopaconline-20
ER  -