<?xml version="1.0"?>
<dblp>
<article key="journals/ipl/Book81" mdate="2011-07-07">
<author>Ronald V. Book</author>
<title>The Undecidability of a Word Problem: On a Conjecture of Strong, Maggiolo-Schettini and Rosen.</title>
<pages>121-122</pages>
<year>1981</year>
<volume>12</volume>
<journal>Inf. Process. Lett.</journal>
<number>3</number>
<url>db/journals/ipl/ipl12.html#Book81</url>
<ee>http://dx.doi.org/10.1016/0020-0190(81)90108-3</ee>
</article>
</dblp>
