During 2004 and 2005 several german books have been published. The question is, why are they not listed and thus advertised on this website?
The current policy is to only list books where a percentage of the cover price goes to the TYPO3 Association. So far this is only the case with the german and english versions of the book written by Altmann/Fritz/Hinderink.
If you have written a book and want to contribute in this manner, please contact adrian@typo3.org with your offer.