Terms of Use

Some (unfortunately necessary) notes.

The complete content of this web site (all URLs starting with www.xpexchange.net) are subject to the German and international copyright law. All content is copyrighted, except if marked otherwise. I retain all rights with regards to the content and the graphical layout of this web site.

All links and references to other web sites, web pages, and documents are used for scientific purposes only.

All pages, which are part of this web site (URL starts with www.xpexchange.net) may be used until further notice for the following purposes: 1) You may reference the pages and/or pictures on this site. 2) You may use pages and/or pictures on this site if and only if the copied material contains the following copyright notice:

© Copyright 2001 by Manfred Lange. All rights reserved.
Source: http://www.xpexchange.net

In all cases: You may not use the content of the web site for commercial purposes, e.g. for making money, without prior approval by me.

Opposed to this you may use the content for academic purposes, e.g. at public schools or public universities. You may also add links or references to your own publications including web pages and web sites if the owner of the copyright remains clearly identifyable.

In any case of doubt please contact the editor. Responsible in the sense of the German "Pressegesetz" (law on publishing/news):

Manfred Lange
Rechbergweg 24
71131 Jettingen
Germany.

One final notice: In some cases I use terms such as "he", "him", or "his". The use of the male form explicitly includes all female persons. In particular I do not intend to discriminate humans because of their gender. The use of these terms has solely practical reasons.