@InProceedings{Loyer02d, author = "Loyer, Yann and Straccia, Umberto", title = "Uncertainty and Partial Non-Uniform Assumptions in Parametric Deductive Databases", booktitle = JELIA-02, publisher = SV, series = LNCS, number = "2424", pages = "271-282", address ="Cosenza, Italy", year ="2002" }