@INPROCEEDINGS{
        BGGBNdcc18,
	AUTHOR = "N. Brisaboa and T. Gagie and A. G{\'o}mez-Brand{\'o}n and 
		  G. Navarro",
	TITLE = "Two-Dimensional Block Trees",
	BOOKTITLE = "Proc. 28th Data Compression Conference (DCC)",
        YEAR = "2018",
        PAGES = "229--238"
    }