@ARTICLE
        { ANipl09,
          AUTHOR = "A. Amir and G. Navarro",
	  TITLE = "Parameterized Matching on Non-linear Structures",
	  JOURNAL = "Information Processing Letters",
	  VOLUME = 109,
	  NUMBER = 15,
	  PAGES = "864--867",
	  YEAR = 2009
	}