1. R. E. Bellman and L.A. Zadeh. Decision-making in a fuzzy environment. Manage. Sci., 17 (4): 141–164, 1970.
2. P. Bosc and L. Lietard. Monotonic quantified statements and fuzzy integrals. In Proc. NAFIPS/IFIS/NASA Conference, pages 8–12, 1994.
3. P. Bosc and L. Lietard. On the comparison of the Sugeno and the Choquet fuzzy integrals for the evaluation of quantified statements. In Proc. of EUFIT’95, pages 709–716, 1995.
4. P. Bosc and O. Pivert. Fuzzy querying in conventional databases. In L. A. Zadeh and J. Kacprzyk, editors, Fuzzy Logic for the Management of Uncertainty, pages 645–671. Wiley and Sons, 1992.
5. J. C. Cubero, J. M. Medina, O. Pons, and M. A. Vila. Using OWA operator in flexible query processing. In R. R. Yager and J. Kacprzyk, editors, The Ordered Weighted Averaging Operators: Theory, Methodology and Applications, pages 258–274. Kluwer Academic Publishers, 1997.