<book-id>
Book Identifier
An identifier, such as a DOI or archive control number, for a <book> or <book-part-wrapper>.
Remarks
The @book-id-type attribute should be used to name the type of
identifier, such as “doi”. There is a separate element for the ISBNs (<isbn>) related
to a book.
Attributes
Content Model
<!ELEMENT book-id (#PCDATA) >
Description
Text, numbers, or special characters
This element may be contained in:
Example 1
A typical DOI identifier:
<book dtd-version="2.0">
<book-meta>
<book-id book-id-type="doi" assigning-authority="crossref">
10.1099/0193281217.001.0002</book-id>
<book-title-group>
<book-title>Fierce Content Models</book-title>
</book-title-group>
<contrib-group>...</contrib-group>
...</book-meta>
<front-matter>...</front-matter>
<book-body>...</book-body>
<book-back>...</book-back>
</book>
Example 2
A publisher-specific book identifier:
<book dtd-version="2.0">
<book-meta>
<book-id book-id-type="other">handbook</book-id>
<book-title-group>
<book-title>The NCBI Handbook</book-title>
</book-title-group>
<contrib-group>...</contrib-group>
...</book-meta>
<front-matter>...</front-matter>
<book-body>...</book-body>
<book-back>...</book-back>
</book>