<?xml version="1.0"?>
<dblp>
<article key="journals/eik/Lau91" mdate="2003-07-14">
<author>Dietlinde Lau</author>
<title>On Closed Subsets of Boolean Functions (A New Proof for Post's Theorem).</title>
<pages>167-178</pages>
<year>1991</year>
<volume>27</volume>
<journal>Elektronische Informationsverarbeitung und Kybernetik</journal>
<number>3</number>
<url>db/journals/eik/eik27.html#Lau91</url>
</article>
</dblp>
