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>

    <!-- Notes to add once CSL processing is enabled: Note: we need at least one citation for an item to show up.  Note: look at the source to see sorting/reordering. -->

    <p>
      2025-05-23: currently testing citations to CSL-style references in the back matter.
      These should go eventually somewhere besides right where the references are.
      <ul>

        <li>
          Judson: <xref ref="biblio-judson-aata"/>
        </li>

        <li>
          Lay: <xref ref="biblio-lay-article"/>
        </li>

        <li>
          Doe: <xref ref="citeproc-py-item-3"/>
        </li>

        <li>
          Doe, later: <xref ref="citeproc-py-item-3-later"/>
        </li>

        <li>
          Conrey/Farmer: <xref ref="conrey-farmer"/>
        </li>

        <li>
          D'Arcus: <xref ref="citeproc-py-item-5"/>
        </li>

        <li>
          Two, authored in-order: <xref ref="conrey-farmer citeproc-py-item-5"/>
        </li>

        <li>
          Two, authored out-of-order: <xref ref="citeproc-py-item-5 conrey-farmer"/>
        </li>

        <li>
          Three, authored reverse-order: <xref ref="biblio-lay-article biblio-judson-aata citeproc-py-item-3"/>
        </li>

      </ul>

    </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-judson-AATA">
      Tom Judson,
      <title>Abstract Algebra: Theory and Applications</title>.

      <note xml:id="note-judson-AATA">

        <p>
          Another online, open-source offering.
        </p>

      </note>

    </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>