1. Beaubouef, T., Petry, F.: Rough Querying of Crisp Data in Relational Databases. In: Proc. Third International Workshop on Rough Sets and Soft Computing (RSSC 1994), San Jose, California, pp. 368–375 (1994)
2. Beaubouef, T., Petry, F.: Fuzzy Rough Set Techniques for Uncertainty. Processing in a Relational Database. International Journal of Intelligent Systems 15, 389–424 (2000)
3. Beaubouef, T., Petry, F.: Rough Functional Dependencies. In: Multiconferences: International Conference on Information and Knowledge Engineering (IKE 2004), Las Vegas, pp. 175–179 (2004)
4. Lecture Notes in Artificial Intelligence;T. Beaubouef,2005
5. Beaubouef, T., Petry, F., Arora, G.: Information-theoretic measures of uncertainty for rough sets and rough relational databases. Information Sciences 109, 185–195 (1998)