Referee Assignment in Sports Leagues. - Alexandre R. Duarte; Celso C. Ribeiro; Sebastián Urrutia; Edward Hermann Haeusler (PATAT, 2006)

A Hybrid ILS Heuristic to the Referee Assignment Problem with an Embedded MIP Strategy. - Alexandre R. Duarte; Celso C. Ribeiro; Sebastián Urrutia (Hybrid Metaheuristics, 2007)