A First Course in Mathematical Modeling
Frank R. Giordano & Maurice D. Weir & William P. Fox
The Design of Approximation Algorithms
David P. Williamson & David B. Shmoys
Algorithms for Convex Optimization
Nisheeth K. Vishnoi
Combinatorial Optimization: Theory and Algorithms
Bernhard Korte & Jens Vygen
Algorithms and Combinatorics (1)
Algorithms and Combinatorics (2)