no citation to Primer in document overview

Hi!

The Document Overview contains in its "References" section a reference to the OWL 2 Primer. However, this reference is never cited within the document. All other references are cited. While there is one purely textual mentioning of the Primer and also a direct link to it in the "Document Roadmap" section, I think it would be good to have at least one citation to the Primer as well.

Michael

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Dipl.-Inform. Michael Schneider
Research Scientist, Dept. Information Process Engineering (IPE)
Tel  : +49-721-9654-726
Fax  : +49-721-9654-727
Email: michael.schneider@fzi.de
WWW  : http://www.fzi.de/michael.schneider
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