1. Borndörfer, R., Schlechte, T.: Models for railway track allocation. In: ATMOS 2007–7th Workshop on Algorithmic Approaches for Transportation Modeling, Optimization, and Systems. Internationales Begegnungs- und Forschungszentrum für Informatik (IBFI), Schloss Dagstuhl, Germany, Dagstuhl, Germany (2007)
2. Cacchiani, V., Caprara, A., Toth, P.: Scheduling extra freight trains on railway networks. Transportation Research Part B 44, 215–231 (2010)
3. Caprara, A., Kroon, L., Monaci, M., Peeters, M., Toth, P.: Chapter 3 passengerrailway optimization. In: Barnhart, C., Laporte, G. (eds.) Transportation, Handbooks in Operations Research and Management Science, vol. 14, pp. 129–187. Elsevier (2007)
4. Lecture Notes in Computer Science;T Feydy,2009
5. Gecode Team: Gecode: Generic constraint development environment (2014). http://www.gecode.org