<?xml version="1.0"?>
<dblp>
<article key="journals/tog/ElberC93" mdate="2003-11-25">
<author>Gershon Elber</author>
<author>Elaine Cohen</author>
<title>Second-order Surface Analysis Using Hybrid Symbolic and Numeric Operators.</title>
<pages>160-178</pages>
<year>1993</year>
<volume>12</volume>
<journal>ACM Trans. Graph.</journal>
<number>2</number>
<ee>http://doi.acm.org/10.1145/151280.151283</ee>
<url>db/journals/tog/tog12.html#ElberC93</url>
</article>
</dblp>
