<?xml version="1.0"?>
<dblp>
<article key="journals/dmtcs/KarkiHH08" mdate="2009-06-08">
<author>Tomi K&#228;rki</author>
<author>Tero Harju</author>
<author>Vesa Halava</author>
<title>Interaction Properties of Relational Periods.</title>
<year>2008</year>
<volume>10</volume>
<journal>Discrete Mathematics &amp; Theoretical Computer Science</journal>
<number>1</number>
<ee>http://www.dmtcs.org/dmtcs-ojs/index.php/dmtcs/article/view/630/2192</ee>
<url>db/journals/dmtcs/dmtcs10.html#KarkiHH08</url>
</article>
</dblp>
