A personalized recommender system for travel information. - Sergiu Theodor Chelcea; George Gallais; Brigitte Trousse (UbiMob, 2004)

Classification 2-3 hiérarchique de données du Web. - Sergiu Theodor Chelcea; Brigitte Trousse (EGC, 2005)

Benefits of InterSite Pre-Processing and Clustering Methods in E-Commerce Domain - Sergiu Theodor Chelcea; Alzennyr Da Silva; Yves Lechevallier; Doru Tanasa; Brigitte Trousse (CoRR, 2005)

Agglomerative 2-3 Hierarchical Classification: Theoretical and Applicative Study. (Classification Ascendante 2-3 Hiérarchique : étude théorique et applicative). - Sergiu Theodor Chelcea (2007)