Chapter Self-uris
Capture the filenames of the PDF and EPUB representations of the chapter in
<self-uri> elements.
Each <self-uri> element must have @content-type
and @xlink:href attributes
The allowed values of
@content-type are:- epub
The @xlink:href attribute must contain the name of the relevant binary
file (including file extension).
Example
<self-uri content-type="pdf" xlink:href="bk978-0-7503-3579-9ch1.pdf"/>
<self-uri content-type="epub" xlink:href="bk978-0-7503-3579-9ch1.epub"/>