@ARTICLE
        { NOPtit20,
	  TITLE = "On the Approximation Ratio of Ordered Parsings",
          AUTHOR = "G. Navarro and C. Ochoa and N. Prezza",
	  JOURNAL = "IEEE Transactions on Information Theory",
	  YEAR = 2021,
	  VOLUME = 67,
	  NUMBER = 2,
	  PAGES = "1008--1026"
	}