<?xml version="1.0"?>
<dblp>
<article key="journals/ndjfl/IshiiKK01" mdate="2004-02-20">
<author>Katsumasa Ishii</author>
<author>Ryo Kashima</author>
<author>Kentaro Kikuchi</author>
<title>Sequent Calculi for Visser's Propositional Logics.</title>
<pages>1-22</pages>
<year>2001</year>
<volume>42</volume>
<journal>Notre Dame Journal of Formal Logic</journal>
<number>1</number>
<url>db/journals/ndjfl/ndjfl42.html#IshiiKK01</url>
</article>
</dblp>
