Information as per German § 5 TMG and person responsible for the content as per German § 55 Abs. 2 RStV:
▚Liability for Links
This website contains links to external sites on whose content I have no influence and can therefore assume no responsibility for. Instead, it is quite obviously the provider of those pages who's responsible for them.
That said, when initially creating a link I checked the linked page for possible violations of the law and couldn't recognize anything illegal. A permanent control of the linked pages is not reasonable without concrete proof of a violation of the law. When you know of such a violation, please report it, so I can remove the link immediately.
For details on copyright, see the page on licenses.