Help needed to use ENTITY in docbook5 (convert from docbook4)

Hi,

I have a docbook4 document that I want to convert to docbook5. In the docbook4 document I have a lot of special character which are defined in the document ownChar.dtd.

How Do I have to change the “old docbook 4” DOCTYPE and ENTITY Part for a docbook5 relax NG document?

 

Attached you will find an extract of the current document:

    <?xml version="1.0" encoding="utf-8"?>

    <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"

                   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [

                                   <!ENTITY % ownChar_dtd SYSTEM "dtd/ownChar.dtd">

                                   %ownChar_dtd;

    ]>

 

    <book

        version="5.0"

        xmlns="http://docbook.org/ns/docbook"

        xmlns:xi="http://www.w3.org/2001/XInclude"

        xmlns:xlink="http://www.w3.org/1999/xlink"

        xml:lang="en">

 

      <title>Test</title>

 

      <bookinfo>

        <legalnotice>

 

          <para>

            Du&#353;an Kazik, Fr&eacute;d&eacute;ric Grollier, Kundr&aacute;t, Jean-S&eacute;bastien P&eacute;dron, J&eacute;r&eacute;my Rosen, …

 

Thanks

Pierre