@ARTICLE
        { NBipl05,
          AUTHOR = "G. Navarro and N. Brisaboa",
	  TITLE = "New Bounds on {$D$}-ary Optimal Codes",
	  JOURNAL = "Information Processing Letters",
	  VOLUME = 96,
	  NUMBER = 5,
	  PAGES = "178--184", 
	  YEAR = 2005
	}