<?xml version="1.0"?>
<dblp>
<article key="journals/jacm/FaginN10" mdate="2011-01-08">
<author>Ronald Fagin</author>
<author>Alan Nash</author>
<title>The structure of inverses in schema mappings.</title>
<pages>31</pages>
<year>2010</year>
<volume>57</volume>
<journal>J. ACM</journal>
<number>6</number>
<ee>http://doi.acm.org/10.1145/1857914.1857915</ee>
<url>db/journals/jacm/jacm57.html#FaginN10</url>
</article>
</dblp>
