@ARTICLE {
        CNBYMacmcs01.2,
	TITLE = "Searching in Metric Spaces",
        AUTHOR = "E. Ch\'avez and G. Navarro and R. Baeza-Yates and 
		  J.L. Marroquin",
        JOURNAL = {ACM Computing Surveys},
        YEAR = 2001,
	VOLUME = 33,
	NUMBER = 3,
	MONTH = sep,
	PAGES = "273--321"
        }