The set of conditions under which people are allowed to use a book or chapter, or other license-related information or restrictions
<!ELEMENT license %license-model; >
((license-p)+)
...
<book-meta>
<book-id>...</book-id>
...
<history>...</history>
<permissions>
<copyright-statement>Copyright: © 2004 Eichenberger
et al.</copyright-statement>
<copyright-year>2004</copyright-year>
<license license-type="open-access"
xlink:href="http://creativecommons.org/licenses/by/2.0/">
<license-p>This is an open-access article distributed under the terms of the
Creative Commons Attribution License, which permits unrestricted use,
distribution, and reproduction in any medium, provided the original
work is properly cited.</license-p>
</license>
</permissions>
<abstract>...</abstract>
</book-meta>
...
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