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<section id="variant.refs">
  <title>References</title>

<para id="variant.refs.abr00">
    <ulink url="http://boost.org/more/generic_exception_safety.html">[Abr00]</ulink>
    David Abrahams.
    &quot;Exception-Safety in Generic Components.&quot;
    M. Jazayeri, R. Loos, D. Musser (eds.):
      Generic Programming '98, Proc. of a Dagstuhl Seminar, Lecture Notes on Computer Science, Vol. 1766, pp. 69-79.
    Springer-Verlag Berlin Heidelberg.
    2000.
</para>
<para id="variant.refs.abr01">
    <ulink url="http://boost.org/more/error_handling.html">[Abr01]</ulink>
    David Abrahams.
    &quot;Error and Exception Handling.&quot;
    Boost technical article.
    2001-2003.
</para>
<para id="variant.refs.ale01a">
    <ulink url="http://www.oonumerics.org/tmpw01/alexandrescu.pdf">[Ale01a]</ulink>
    Andrei Alexandrescu.
    &quot;An Implementation of Discriminated Unions in C++.&quot;
    <emphasis>OOPSLA 2001</emphasis>, Second Workshop on C++ Template Programming.
    Tampa Bay, 14 October 2001.
</para>
<para id="variant.refs.ale01b">
    <ulink url="http://www.moderncppdesign.com/book/main.html">[Ale01b]</ulink>
    Andrei Alexandrescu.
    <emphasis>Modern C++ Design</emphasis>.
    Addison-Wesley, C++ In-Depth series.
    2001.
</para>
<para id="variant.refs.ale02">
    <ulink url="http://cuj.com/experts/2008/alexandr.htm">[Ale02]</ulink>
    Andrei Alexandrescu.
    &quot;Generic&lt;Programming&gt;: Discriminated Unions&quot; series:
        <ulink url="http://cuj.com/experts/2004/alexandr.htm">Part 1</ulink>,
        <ulink url="http://cuj.com/experts/2006/alexandr.htm">Part 2</ulink>,
        <ulink url="http://cuj.com/experts/2008/alexandr.htm">Part 3</ulink>.
    <emphasis>C/C++ Users Journal</emphasis>.
    2002.
</para>
<para id="variant.refs.boo02">
    <ulink url="http://lists.boost.org/MailArchives/boost/msg30415.php">[Boo02]</ulink>
    Various Boost members.
    &quot;Proposal --- A type-safe union.&quot;
    Boost public discussion.
    2002.
</para>
<para id="variant.refs.c++98">
  [C++98]
  <emphasis>International Standard, Programming Languages – C++</emphasis>.
  ISO/IEC:14882.
  1998.
</para>
<para id="variant.refs.gof95">
    [GoF95]
    Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides.
    <emphasis>Design Patterns: Elements of Reusable Object-Oriented Software</emphasis>.
    Addison-Wesley.
    1995.
</para>
<para id="variant.refs.gre02">
    <ulink url="http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl?variant">[Gre02]</ulink>
    Douglas Gregor.
    &quot;BOOST_USER: variant.&quot;
    Boost Wiki paper.
    2002.
</para>
<para id="variant.refs.gur02">
    <libraryname alt="MPL">[Gur02]</libraryname>
    Aleksey Gurtovoy.
    <emphasis>Boost Metaprogramming Library.</emphasis>
    2002.
</para>
<para id="variant.refs.hen01">
    <libraryname alt="Any">[Hen01]</libraryname>
    Kevlin Henney.
    <emphasis>Boost Any Library.</emphasis>
    2001.
</para>
<para id="variant.refs.mk02">
    <libraryname alt="Preprocessor">[MK02]</libraryname>
    Paul Mensonides and Vesa Karvonen.
    <emphasis>Boost Preprocessor Library.</emphasis>
    2002.
</para>
<para id="variant.refs.mcd+01">
    <libraryname alt="Type Traits">[MCD+01]</libraryname>
    Steve Cleary, Beman Dawes, Aleksey Gurtovoy, Howard Hinnant, Jesse Jones, Mat Marcus, John Maddock, Jeremy Siek.
    <emphasis>Boost Type Traits Library</emphasis>.
    2001.
</para>
<para id="variant.refs.sut00">
    <ulink url="http://www.gotw.ca/publications/xc++.htm">[Sut00]</ulink>
    Herb Sutter.
    <emphasis>Exceptional C++: 47 Engineering Puzzles, Programming Problems, and Solutions</emphasis>.
    Addison-Wesley, C++ In-Depth series.
    2000.
</para>
<para id="variant.refs.wil02">
    <ulink url="http://aspn.activestate.com/ASPN/Mail/Message/boost/1314807">[Wil02]</ulink>
    Anthony Williams.
    Double-Storage Proposal.
    2002.
</para>

</section>
