Abraham Bookstein Shmuel T. Klein Timo Raita Fuzzy Hamming Distance: A New Dissimilarity Measure. 86-97 2001 conf/cpm/2001 CPM http://link.springer.de/link/service/series/0558/bibs/2089/20890086.htm db/conf/cpm/cpm2001.html#BooksteinKR01