Glad Deschrijver Ofer Arieli Chris Cornelis Etienne E. Kerre A Bilattice-Based Framework for Handling Graded Truth and Imprecision. 13-41 2007 15 International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 1 http://dx.doi.org/10.1142/S0218488507004352 db/journals/ijufks/ijufks15.html#DeschrijverACK07