@ARTICLE
        { GNPtcs11.2,
	  AUTHOR = "T. Gagie and G. Navarro and S.J. Puglisi",
	  TITLE = "New Algorithms on Wavelet Trees and Applications to 
		   Information Retrieval",
	  JOURNAL = "Theoretical Computer Science",
	  YEAR = 2012,
	  VOLUME = "426-427",
	  PAGES = "25--41"
	}