@INPROCEEDINGS{
        GGORN05,
	AUTHOR = "G. Guti\'errez and G. Navarro and A. Rodr\'{\i}guez 
		  and A. Gonz\'alez and J. Orellana",
	TITLE = "A Spatio-Temporal Access Method based on Snapshots and Events",
        BOOKTITLE = {Proc. 13th {ACM} International Symposium on Advances in Geographic Information Systems (GIS)",
        YEAR = "2005",
	PAGES = "115--124",
	PUBLISHER = "ACM Press"
    }