Linking to These Pages

Links to this web site are welcome and don’t require permission or notification, provided that the linked pages aren’t opened within a frame of another web site, and provided that no other method is used to create the impression that the linked pages are part of another web site (“framing”).


It’s best to link to one of the following permanent URLs:



Tool and Web Guide English

Tool and Web Guide German

Books Page English

Books Page German

Services Page English

Services Page German

News Blog

RSS feed


Thank you.