<?xml version="1.0"?>
<dblp>
<article key="journals/jcss/Sandhu92" mdate="2003-11-20">
<author>Ravi S. Sandhu</author>
<title>Undecidability of Safety for the Schematic Protection Model with Cyclic Creates.</title>
<pages>141-159</pages>
<year>1992</year>
<volume>44</volume>
<journal>J. Comput. Syst. Sci.</journal>
<number>1</number>
<url>db/journals/jcss/jcss44.html#Sandhu92</url>
</article>
</dblp>
