@INPROCEEDINGS{
        FNspire14.3,
        AUTHOR = "H. Ferrada and G. Navarro",
	TITLE = "Efficient Compressed Indexing for Approximate Top-$k$ String
Retrieval",
        BOOKTITLE = {Proc. 21st International Symposium on String Processing and Information Retrieval (SPIRE)},
        YEAR = "2014",
	SERIES = "LNCS 8799",
	PAGES = "18--30"
    }