Reference

Capture individual references in a <ref> element.

If the reference item is labeled in the source then the relevant <ref> element must contain a child <label>.

The content of the reference must be captured inside an <element-citation> with the content marked up into the relevant child elements.

<ref id="bk978-0-7503-3579-9ch2bib1">
  <label>1</label>
  <element-citation publication-type="book" xlink:type="simple">
    <person-group person-group-type="author">
      <name name-style="western">
        <surname>Jackson</surname>
        <given-names>J D</given-names>
      </name>
    </person-group>
    <year>1999</year>
    <source>Classical Electrodynamics</source>
    <edition>3rd edn</edition>
    <publisher-loc>New York</publisher-loc>
    <publisher-name>Wiley</publisher-name>
  </element-citation>
</ref>

<ref id="bk978-0-7503-3579-9ch3bib7">
  <label>7</label>
  <element-citation publication-type="journal" xlink:type="simple">
    <person-group person-group-type="author">
      <name name-style="western">
        <surname>Maradudin</surname>
        <given-names>A A</given-names>
      </name>
      <name name-style="western">
        <surname>McGurn</surname>
        <given-names>A R</given-names>
      </name>
    </person-group>
    <year>1993</year>
    <article-title>The photonic band structure of a truncated,
  two-dimensional, periodic medium</article-title>
    <source>J. Opt. Soc. Am. </source>
    <volume>10</volume>
    <fpage>307</fpage>
    <pub-id pub-id-type="doi">10.1364/JOSAB.10.000307</pub-id>
  </element-citation>
</ref>

<ref id="bk978-0-7503-2304-8ch4bib162">
  <element-citation publication-type="patent" xlink:type="simple">
    <person-group person-group-type="author">
      <name name-style="western">
        <surname>Tesla</surname>
        <given-names>N</given-names>
      </name>
    </person-group>
    <year>1900</year>
    <article-title>System of transmission of electrical energy filed Sep. 2,
  1897</article-title>
    <source>U.S. Patent</source>
    <patent country="US">645576</patent>
    <comment>Mar. 20</comment>
  </element-citation>
</ref>

<ref id="bk978-0-7503-3851-6ch2bib6">
  <label>6</label>
  <element-citation publication-type="thesis" xlink:type="simple">
    <person-group person-group-type="author">
      <name name-style="western">
        <surname>Wong</surname>
        <given-names>V</given-names>
      </name>
    </person-group>
    <year>2018</year>
    <article-title>The relationship between school science and mathematics
  education</article-title>
    <source>PhD Thesis</source>
    <institution xlink:type="simple">King’s College London</institution>
    <comment>
      <ext-link ext-link-type="uri" xlink:href="https://kclpure.kcl.ac.uk/portal/files/95881991/2018_Wong_Victoria_1231276_ethesis.pdf" xlink:type="simple">https://kclpure.kcl.ac.uk/portal/files/95881991/2018_Wong_Victoria_1231276_ethesis.pdf</ext-link>
    </comment>
  </element-citation>
</ref>

<ref id="bk978-0-7503-3071-8ch4bib183">
  <label>183</label>
  <element-citation publication-type="confproc" xlink:type="simple">
    <person-group person-group-type="author">
      <name name-style="western">
        <surname>Cundall</surname>
        <given-names>P A</given-names>
      </name>
    </person-group>
    <year>1971</year>
    <article-title>A computer model for simulating progressive, large-scale
  movement in blocky rock system</article-title>
    <conf-name>Proc. of the Int. Symp. on Rock Mechanics</conf-name>
  </element-citation>
</ref>

<ref id="bk978-0-7503-3071-8ch4bib120">
  <label>120</label>
  <element-citation publication-type="report" xlink:type="simple">
    <person-group person-group-type="author">
      <name name-style="western">
        <surname>Walton</surname>
        <given-names>O R</given-names>
      </name>
      <name name-style="western">
        <surname>Braun</surname>
        <given-names>R L</given-names>
      </name>
    </person-group>
    <year>1993</year>
    <article-title>Simulation of rotary-drum and repose tests for frictional
  spheres and rigid sphere clusters</article-title>
    <source>Technical report</source>
    <institution xlink:type="simple">Lawrence Livermore National Lab., CA
  (United States)</institution>
  </element-citation>
</ref>

<ref id="bk978-0-7503-3071-8ch9bib1">
  <label>1</label>
  <element-citation publication-type="preprint" xlink:type="simple">
    <person-group person-group-type="author">
      <name name-style="western">
        <surname>Ota</surname>
        <given-names>R</given-names>
      </name>
      <name name-style="western">
        <surname>Kwon</surname>
        <given-names>S I</given-names>
      </name>
      <name name-style="western">
        <surname>Berg</surname>
        <given-names>E</given-names>
      </name>
      <name name-style="western">
        <surname>Hashimoto</surname>
        <given-names>F</given-names>
      </name>
      <name name-style="western">
        <surname>Nakajima</surname>
        <given-names>K</given-names>
      </name>
      <name name-style="western">
        <surname>Ogawa</surname>
        <given-names>I</given-names>
      </name>
      <name name-style="western">
        <surname>Tamagawa</surname>
        <given-names>Y</given-names>
      </name>
      <name name-style="western">
        <surname>Omura</surname>
        <given-names>T</given-names>
      </name>
      <name name-style="western">
        <surname>Hasegawa</surname>
        <given-names>T</given-names>
      </name>
      <name name-style="western">
        <surname>Cherry</surname>
        <given-names>S R</given-names>
      </name>
    </person-group>
    <year>2021</year>
    <article-title>Direct positron emission imaging: ultra-fast timing
  enables reconstruction-free imaging</article-title>
    <comment>arXiv:<ext-link ext-link-type="uri" xlink:href="https://arxiv.org/abs/2105.05805" xlink:type="simple">2105.05805</ext-link>
  </comment>
  </element-citation>
</ref>