<?xml version="1.0"?>
<dblp>
<article key="journals/apal/BergerBS02" mdate="2003-11-28">
<author>Ulrich Berger</author>
<author>Wilfried Buchholz</author>
<author>Helmut Schwichtenberg</author>
<title>Refined program extraction form classical proofs.</title>
<pages>3-25</pages>
<year>2002</year>
<volume>114</volume>
<journal>Ann. Pure Appl. Logic</journal>
<number>1-3</number>
<url>db/journals/apal/apal114.html#BergerBS02</url>
</article>
</dblp>
