== No edit war == 
 I recently added some new information (including references) and deleted many claims that were not supported by any references. Furthermore, I removed refernces, which are simply not online any more. If you believe that I removed something while there is still a source out there, please provide it and do not simply add information without references. Let us please try to keep this article as neutral as possible without starting edit wars. If something is unclear, let us discuss it here on the discussion page. - Thank you very much.