<?xml version="1.0"?>
<dblp>
<article key="journals/tcs/JainNS07" mdate="2007-09-21">
<author>Sanjay Jain</author>
<author>Jochen Nessel</author>
<author>Frank Stephan</author>
<title>Invertible classes.</title>
<pages>49-65</pages>
<year>2007</year>
<volume>384</volume>
<journal>Theor. Comput. Sci.</journal>
<number>1</number>
<ee>http://dx.doi.org/10.1016/j.tcs.2007.05.017</ee>
<url>db/journals/tcs/tcs384.html#JainNS07</url>
</article>
</dblp>
