1. Backofen, R., & Will, S. (1999). Excluding symmetries in constraint based search. In Proceedings of CP?99.
2. Barnier, N., & Brisset, P. (2002). Solving the Kirkman?s schoolgirl problem in a few seconds. In Proceedings of CP 02, pages 477?491.
3. Crawford, J., Ginsberg, M., Luks, E.M., Roy, A. Symmetry breaking Predicates for Search Problems. In Proceedings of KR?96, pages 148?159.
4. Gent, I.P., Walsh, T., & Sellmann, B. CSPlib http://www-users.cs.york.ac.uk/?tw/csplib/
5. Fahle, T., Shamberger, S., & Sellmann, M. (2001). Symmetry Breaking. In Proceedings of CP01, pages 93?107.