Copyright

This website contains copyrighted material, the use of which has often not been specifically authorised by the copyright owner. This material is used under the provisions of fair use. In general the folowing criteria apply:

  • the use of the material does not harm the business of the copyright owner
  • the material is already freely available on the internet
  • the material is appropriate and there is no proper alternative

The texts on this website, insofar they are not from external sources, are part of the public domain and may be copied without permission as long as they are not altered, not used for commercial purposes, and the source is mentioned.