<?xml version="1.0"?>
<dblp>
<article key="journals/tods/HwangC07" mdate="2007-06-11">
<author>Seung-won Hwang</author>
<author>Kevin Chen-Chuan Chang</author>
<title>Optimizing top-k queries for middleware access: A unified cost-based approach.</title>
<pages>5</pages>
<year>2007</year>
<volume>32</volume>
<journal>ACM Trans. Database Syst.</journal>
<number>1</number>
<ee>http://doi.acm.org/10.1145/1206049.1206054</ee>
<url>db/journals/tods/tods32.html#HwangC07</url>
</article>
</dblp>
