@INPROCEEDINGS{
        NRspire02.4,
        AUTHOR = "G. Navarro and N. Reyes",
	TITLE = "Fully Dynamic Spatial Approximation Trees",
        BOOKTITLE = {Proc. 9th International Symposium on String Processing and Information Retrieval (SPIRE)},
        YEAR = "2002",
	SERIES = "LNCS 2476",
        PUBLISHER = "Springer",
	PAGES = "254--270"
    }