Book.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book
  PUBLIC "-//NLM//DTD BITS Book Interchange DTD with OASIS and XHTML Tables v2.0 20151225//EN"
  "BITS-book2.dtd">
<book dtd-version="2.0" xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:mml="http://www.w3.org/1998/Math/MathML">
  <book-meta>
    <book-title-group>
      <book-title/>
    </book-title-group>
    <contrib-group>
      <contrib>
        <contrib-id/>
        <name>
          <surname/>
          <given-names/>
        </name>
      </contrib>
    </contrib-group>
  </book-meta>
  <book-body>
    <book-part>
      <book-part-meta>
        <title-group>
          <title/>
        </title-group>
      </book-part-meta>
    </book-part>
  </book-body>
  <book-back>
    <ref-list>
      <ref>
        <mixed-citation/>
      </ref>
    </ref-list>
  </book-back>
</book>