@INPROCEEDINGS{
        BdBKNspire14.2,
        AUTHOR = "N. Brisaboa and G. de Bernardo and R. Konow and G. Navarro",
	TITLE = "$K^2$-Treaps: Range Top-$k$ Queries in Compact Space",
        BOOKTITLE = {Proc. 21st International Symposium on String Processing and Information Retrieval (SPIRE)},
        YEAR = "2014",
	SERIES = "LNCS 8799",
	PAGES = "215--226"
    }