<?xml version="1.0" encoding="ISO-8859-1"?>
<authorgroup>
  <author>
    <firstname>
    John
    </firstname>
    <surname>
    Forrest
    </surname>
    <email>jjforre at us dot ibm dot com</email>
    <affiliation>
      <orgname>
      IBM Research
      </orgname>
    </affiliation>
  </author>
  <author>
    <firstname>
    David
    </firstname>
    <surname>
    de la Nuez
    </surname>
    <email>dmd57 at columbia dot edu</email>
    <affiliation>
      <orgname>
      Columbia University &amp; IBM Research
      </orgname>
    </affiliation>
  </author>
  <author>
    <firstname>
    Robin
    </firstname>
    <surname>
    Lougee-Heimer
    </surname>
    <email>robinlh at us dot ibm dot com</email>
    <affiliation>
      <orgname>
      IBM Research
      </orgname>
    </affiliation>
  </author>
</authorgroup>