Winkler, William E. (1985) "Preprocessing of Lists and String Comparison," in Wendy Alvey & Beth Kilss (eds.) Record Linkage Techniques — 1985, Department of the Treasury Internal Revenue Service Statistics of Income Division, December 1985, Pub. 1299 (2-86), pp. 181-187. [Link to working paper no. 1367 section 2]