1. Garey, M.R., Johnson, D.S.: Computers and Intractability: A Guide to the Theory of NP-Completeness. W. H. Freeman & Co., New York (1979)
2. San Segundo, P., Rodríguez-Losada, D., Jiménez, A.: An exact bit-parallel algorithm for the maximum clique problem. Comput. Oper. Res. 38(2), 571–581 (2011)
3. San Segundo, P., Matia, F., Rodríguez-Losada, D., Hernando, M.: An improved bit parallel exact maximum clique algorithm. Optimization Letters (2011)
4. Crawford, J., Ginsberg, M., Luks, E., Roy, A.: Symmetry-breaking predicates for search problems. In: KR 1996: Principles of Knowledge Representation and Reasoning, pp. 148–159. Morgan Kaufmann (1996)
5. Gent, I.P., Petrie, K.E., François Puget, J.: Symmetry in constraint programming. In: Handbook of Constraint Programming, pp. 329–376. Elsevier (2006)