<?xml version="1.0"?>
<dblp>
<article key="journals/jal/Heitsch05" mdate="2005-10-31">
<author>Christine E. Heitsch</author>
<title>Insufficiency of four known necessary conditions on string unavoidability.</title>
<pages>96-123</pages>
<year>2005</year>
<volume>56</volume>
<journal>J. Algorithms</journal>
<number>2</number>
<ee>http://dx.doi.org/10.1016/j.jalgor.2004.07.010</ee>
<url>db/journals/jal/jal56.html#Heitsch05</url>
</article>
</dblp>
