<?xml version="1.0"?>
<dblp>
<article key="journals/tcs/Jurdzinski07" mdate="2008-01-31">
<author>Tomasz Jurdzinski</author>
<title>On complexity of grammars related to the safety problem.</title>
<pages>56-72</pages>
<year>2007</year>
<volume>389</volume>
<journal>Theor. Comput. Sci.</journal>
<number>1-2</number>
<ee>http://dx.doi.org/10.1016/j.tcs.2007.07.043</ee>
<url>db/journals/tcs/tcs389.html#Jurdzinski07</url>
</article>
</dblp>
