<?xml version="1.0"?>
<dblp>
<article key="journals/ipl/Demetrovics78" mdate="2003-11-20">
<author>J&#225;nos Demetrovics</author>
<title>On the Number of Candidate Keys.</title>
<pages>266-269</pages>
<year>1978</year>
<volume>7</volume>
<journal>Inf. Process. Lett.</journal>
<number>6</number>
<url>db/journals/ipl/ipl7.html#Demetrovics78</url>
</article>
</dblp>
