Derivatives and Integrals: An Annotated Discourse

<appendix xml:id="references" label="appendix-multiple-references">
  <title>Multiple References</title>
  <subsection>
    <title>Multiple Specialized References</title>
    <p>
      You might want to have lists of references,
      in the back, but with multiple such lists.
      Make an <tag>appendix</tag> to hold them, give it some structure
      (for an <tag>article</tag>,
      a leading <tag>subsection</tag>,
      such as the one you are reading right now),
      then follow with multiple <tag>references</tag> divisions.
      A typical citation will then look like:
      <xref ref="biblio-strang-article-tres" />.
    </p>
  </subsection>
  <references>
    <title>General References</title>
    <biblio type="raw" xml:id="biblio-strang-article-uno">
      Gilbert Strang,
      <title>The Fundamental Theorem of Linear Algebra</title>,
      <journal>The American Mathematical Monthly</journal>
      November 1993,
      <volume>100</volume>
      <number>9</number>,
      848<ndash />855.
    </biblio>
  </references>
  <references>
    <title>Specialized References</title>
    <biblio type="raw" xml:id="biblio-strang-article-dos">
      Gilbert Strang,
      <title>The Fundamental Theorem of Linear Algebra</title>,
      <journal>The American Mathematical Monthly</journal>
      November 1993,
      <volume>100</volume>
      <number>9</number>,
      848<ndash />855.
    </biblio>
    <biblio type="raw" xml:id="biblio-strang-article-tres">
      Gilbert Strang,
      <title>The Fundamental Theorem of Linear Algebra</title>,
      <journal>The American Mathematical Monthly</journal>
      November 1993,
      <volume>100</volume>
      <number>9</number>,
      848<ndash />855.
    </biblio>
  </references>
</appendix>