Links
[1] https://www.ifross.org/?q=python-software-foundation-license-v2
[2] https://www.ifross.org/?q=user/login&destination=comment/reply/1359%23comment-form
[3] https://www.ifross.org/?q=category/lizenzordnung/open-source-lizenzen/i-lizenzen-ohne-copyleft-effekt/bsdartige-lizenzen
[4] https://www.ifross.org/?q=category/tags/python-20