@INPROCEEDINGS{
        GNalenex15,
        AUTHOR = "S. Gog and G. Navarro",
        TITLE = "Improved Single-Term Top-$k$ Document Retrieval",
        BOOKTITLE = "Proc. 17th Workshop on Algorithm Engineering and 
		     Experiments (ALENEX)",
        YEAR = "2015",
	PUBLISHER = "SIAM Press",
        PAGES = "24--32"
    }