1. Agra A (1993) Master thesis, Department of Statistics and Operations Research, University of Lisbon, Portugal
2. Borndörfer R, Grötschel M, Pfetsch E (2006) Public transportation to the fORe! Or/MS Today 33(2):30–40
3. Chu P, Beasley J (1995) A genetic algorithm for the set partitioning problem. Imperial College, London
4. Hillier F, Lieberman G (1995) Introduction to operations research. McGraw-Hill, New York
5. Portugal R (2006) A new approach for the drivers scheduling problem in transportation companies. PhD thesis, Department of Statistics and Operations Research, University of Lisbon, Portugal