@INPROCEEDINGS{
        FGNRSdcc21.2,
 	AUTHOR = "J. Fuentes-Sep{\'u}lveda and D. Gatica and G. Navarro and
		  A. Rodr{\'i}guez and D. Seco",
	TITLE = "Compact Representation of Spatial Hierarchies and Topological 
		Relationships",
	BOOKTITLE = "Proc. 31th Data Compression Conference (DCC)",
        YEAR = "2021",
        PAGES = "113--122"
    }