Domain owner with responsibility for the content: Klaus Gertz

For contact information please go to the Contact page.


1. Online content

The authors have taken care to ensure that all the information contained within this website is correct, complete and up to date. However, they cannot be held liable for possible errors or omissions. Likewise, no responsibility can be taken for direct or indirect damage resulting from the use of the information contained in the website. The use of the website takes place on the user’s responsibility.

2. Referrals and links

Our external links have been carefully checked and kept to a minimum. Nevertheless, we can accept no responsibility for the content of external links. Responsibility for the content of linked pages lies exclusively with the operators of the parent websites.

3. Copyright

Unless otherwise indicated all images, code, scripts as well as the layout are the intellectual property of the authors of No part of the content for which the authors retain the copyright, including scripts and images, may be used by third parties or reproduced in electronic or other publications without the express written consent of the authors. Furthermore, it is not permitted to generate links leading to this website from sources containing immoral, dubious or otherwise unacceptable material.

4. Data protection

Data Protection

5. Validity of this disclaimer

This disclaimer forms an integral part of the internet presentation from which it can be accessed directly. Insofar as individual passages of this text do not correspond with current jurisdiction or do not do so entirely, this has no effect on the content, validity and effectiveness of the other parts of the document.