@ARTICLE
        { FCNPjea09,,
          TITLE = "Speeding up Spatial Approximation Search in Metric Spaces",
          AUTHOR = "K. Figueroa and E. Ch{\'a}vez and G. Navarro and R. Paredes",
          JOURNAL = "ACM Journal of Experimental Algorithmics (JEA)",
	  YEAR = 2009,
          VOLUME = "14"
	  PAGES = "article 3.6",
	  NOTE = "21 pages"
        }