<?xml version="1.0"?>
<dblp>
<inproceedings key="conf/lics/Hella92" mdate="2006-04-25">
<title>Logical Hierarchies in PTIME</title>
<author>Lauri Hella</author>
<pages>360-368</pages>
<crossref>conf/lics/LICS7</crossref>
<year>1992</year>
<booktitle>LICS</booktitle>
<url>db/conf/lics/lics92.html#Hella92</url>
</inproceedings>

</dblp>
