@INPROCEEDINGS 
        { NRsccc03,
          TITLE = "Improved Deletions in Dynamic Spatial Approximation Trees",
          AUTHOR = "G. Navarro and N. Reyes",
	  BOOKTITLE = "Proc. XXIII International Conference of the 
			Chilean Computer Science Society (SCCC)",
	  PUBLISHER = "IEEE CS Press",
          YEAR = 2003,
	  PAGES = "13--22"
        }