The Traveling Tournament Problem Description and Benchmarks. - Kelly Easton; George L. Nemhauser; Michael A. Trick (CP, 2001)

Solving the Travelling Tournament Problem: A Combined Integer Programming and Constraint Programming Approach. - Kelly Easton; George L. Nemhauser; Michael A. Trick (PATAT, 2002)

Sports Scheduling. - Kelly Easton; George L. Nemhauser; Michael A. Trick (Handbook of Scheduling, 2004)