<?xml version="1.0"?>
<dblp>
<article key="journals/fac/HansenC97" mdate="2003-12-01">
<author>Michael R. Hansen</author>
<author>Zhou Chaochen</author>
<title>Duration Calculus: Logical Foundations.</title>
<pages>283-330</pages>
<year>1997</year>
<volume>9</volume>
<journal>Formal Asp. Comput.</journal>
<number>3</number>
<url>db/journals/fac/fac9.html#HansenC97</url>
</article>
</dblp>
