Amélioration de la flexibilité dans les bases d'objets flous : expérimentation dans le cadre du logiciel FIRMS. (Flexibility amelioration of fuzzy objects databases : experimentation results of firms system). - Pascal Subtil (1995)

A fuzzy information retrieval and management system and its applications. - Pascal Subtil; Noureddine Mouaddib; Odile Foucaut (SAC, 1996)

Management of Uncertainty and Vagueness in Databases: The Firms Point of View. - Noureddine Mouaddib; Pascal Subtil (Int. J. Uncertain. Fuzziness Knowl. Based Syst., 1997)