@INPROCEEDINGS{
        BNOspire12.6,
        AUTHOR = "N. Brisaboa and G. Navarro and A. Ord{\'o}{\~n}ez",
	TITLE = "Smaller Self-Indexes for Natural Language",
        BOOKTITLE = {Proc. 19th International Symposium on String Processing and Information Retrieval (SPIRE)},
        YEAR = "2012",
	SERIES = "LNCS 7608",
	PAGES = "372--378"
    }