Loredana Biacino Giangiacomo Gerla Mingsheng Ying Approximate Reasoning Based on Similarity. 77-86 2000 46 Math. Log. Q. 1 http://dx.doi.org/10.1002/(SICI)1521-3870(200001)46:1<77::AID-MALQ77>3.0.CO;2-X db/journals/mlq/mlq46.html#BiacinoGY00