Nees Jan van Eck Ludo Waltman Jan van den Berg Uzay Kaymak Visualizing the WCCI 2006 Knowledge Domain. 1671-1678 2006 FUZZ-IEEE https://doi.org/10.1109/FUZZY.2006.1681931 https://www.wikidata.org/entity/Q57904131 conf/fuzzIEEE/2006 db/conf/fuzzIEEE/fuzzIEEE2006.html#EckWBK06