1. Bouchon-Meunier, B., Rifqi, M., Bothorel, S.: Towards general measures of comparison of objects. Fuzzy Sets and Systems 84, 143–153 (1996)
2. Ceravolo, P.: Extracting Role Hierarchies from Authentication Data Flows. Computer Systems Science & Engineering Journal (IJCSSE) 19(3), 121–127 (2004)
3. Ceravolo, P., Nocerino, M.C., Viviani, M.: Knowledge Extraction from Semistructured Data Based on Fuzzy Techniques. In: Knowledge-Based Intelligent Information and Engineering Systems, Proceedings of the 8th International Conference, KES 2004, Part III, pp. 328–334 (2004)
4. Damiani, E., Nocerino, M.C., Viviani, M.: Knowledge Extraction from an XML Data Flow: Building a Taxonomy based on Clustering Technique, Current Issues in Data and Knowledge Engineering. In: Proceedings of EUROFUSE 2004: 8th Meeting of the EURO Working Group on Fuzzy Sets, pp. 133–142 (2004)
5. Leida, M.: Structural information extraction techniques from semi-structured data flows, coming from differents data sources, Università degli Studi di Milano, DTI – Note del Polo – Research, No. 70 (2005)