<?xml version="1.0"?>
<dblp>
<article key="journals/jsc/Labelle92" mdate="2003-11-19">
<author>Gilbert Labelle</author>
<title>Counting Asymmetric Enriched Trees.</title>
<pages>211-242</pages>
<year>1992</year>
<volume>14</volume>
<journal>J. Symb. Comput.</journal>
<number>2/3</number>
<url>db/journals/jsc/jsc14.html#Labelle92</url>
</article>
</dblp>
