<?xml version="1.0"?>
<dblp>
<article key="journals/jar/Johnson97" mdate="2004-02-04">
<author>C. A. Johnson</author>
<title>Deduction Trees and the View Update Problem in Indefinite Deductive Databases.</title>
<pages>31-85</pages>
<year>1997</year>
<volume>19</volume>
<journal>J. Autom. Reasoning</journal>
<number>1</number>
<url>db/journals/jar/jar19.html#Johnson97</url>
</article>
</dblp>
