@ARTICLE
        { Navtcs03,
          TITLE = "Optimal Binary Search Trees with Costs Depending on the 
		   Access Paths",
          AUTHOR = "J. Szwarcfiter and G. Navarro and R. Baeza-Yates and
		    J. de S. Oliveira and W. Cunto and N. Ziviani",
	  JOURNAL = "Theoretical Computer Science A",
	  YEAR = 2003,
          VOLUME = 290,
	  NUMBER = 3,
	  PAGES = "1799--1814"
	}