Introdution to operations research.
Hillier,Frederick S.  1990 
Introdution to operations research. - 5th ed - NY: Mcgraw-hill, 1990. - xviii,954p.
T 57.6 .H54 1990
                        Introdution to operations research. - 5th ed - NY: Mcgraw-hill, 1990. - xviii,954p.
T 57.6 .H54 1990