@INPROCEEDINGS{
        GNPspire10.1,
        AUTHOR = "T. Gagie and G. Navarro and S. Puglisi",
	TITLE = "Colored Range Queries and Document Retrieval",
        BOOKTITLE = {Proc. 17th International Symposium on String Processing and Information Retrieval (SPIRE)},
        YEAR = "2010",
	SERIES = "LNCS 6393",
	PAGES = "67--81",
        PUBLISHER = "Springer",
    }