Ingo Schmitt Andreas Nürnberger Image Database Search using Fuzzy and Quantum Logic. 1-6 2007 FUZZ-IEEE http://dx.doi.org/10.1109/FUZZY.2007.4295682 conf/fuzzIEEE/2007 db/conf/fuzzIEEE/fuzzIEEE2007.html#SchmittN07