1. Baldwin JF, Coyne MR, Martin TP (1993) Querying a database with fuzzy attribute values by iterative updating of the selection criteria. In: Proceedings of International Joint Conference on Artificial Intelligence (IJCAI’93)
2. Baldwin JF, Martin TP, Pilsworth BW (1995) FRIL - Fuzzy and evidential reasoning in artificial intelligence. John Wiley & Sons, Inc, New York
3. Bosc P (1999) Fuzzy Databases. In: Bezdek J, Dubois D, Prade H (eds) Fuzzy sets in approximate reasoning and information systems, The Handbooks of Fuzzy Sets Series. Kluwer Academic Publishers, pp 403–468
4. Bosc P, Lietard L, Pivert O (2000) About ill-known data and equi-join operations. In: Larsen HL, Kacprzyk J, Zadrozny S, Andreasen T, Christiansen H (eds) Flexible query answering systems. Recent advances. Physica-Verlag, Heidelberg New York, pp 65–74
5. Bosc P, Pivert O (1992) Fuzzy querying in conventional databases. In: Zadeh LA, Kacprzyk J (eds) Fuzzy logic for the management of uncertainty. John Wiley & Sons, pp 645–671