<?xml version="1.0"?>
<dblp>
<article key="journals/apal/GrigorievV01" mdate="2003-11-28">
<author>Dima Grigoriev</author>
<author>Nicolai Vorobjov</author>
<title>Complexity of Null-and Positivstellensatz proofs.</title>
<pages>153-160</pages>
<year>2001</year>
<volume>113</volume>
<journal>Ann. Pure Appl. Logic</journal>
<number>1-3</number>
<url>db/journals/apal/apal113.html#GrigorievV01</url>
</article>
</dblp>
