1. Agrawal, R., Srikant, R.: Mining sequential pattern. In: Yu, P.S., Chen. (eds.) Eleventh International Conference on Data Engineering (ICDE 1995), pp. 3–14, IEEE Computer Society Press, Taipei, Taiwan (1995)
2. Srikant, R., Agrawal, R.: Mining sequential patterns: generalization and performance improvements, EDBT 1996, pp. 3–17, Avignon, France (1996)
3. Pei, J., Han, J., Mortazavi, B.: PrefixSpan: mining sequential patterns efficiently by prefix projected pattern growth, ICDE, pp. 215–224, Heidelberg, Germany (2001)
4. Han, H., Pei, J., Mortazavi-Asl, B., Chen, Q., Dayal, U., Hsu, M-C.: FreeSpan: frequent pattern projected sequential pattern mining. In: Proceedings of 2000 international conference on knowledge discovery and data mining, pp. 355–359 (2000)
5. Romero, C., Romero, J.R., Luna, J.M., Ventura, S.: Mining rare association rules from e-learning data. In: 3rd International conference on educational data mining, pp. 171–180 (2010)