Links[1] https://www.ifross.org/sites/default/files/Zope%20Public%20License%20v.%202.0.txt [2] https://www.ifross.org/?q=category/lizenzordnung/open-source-lizenzen/i-lizenzen-ohne-copyleft-effekt/bsdartige-lizenzen [3] https://www.ifross.org/?q=category/tags/zpl-20