Links
[1] https://www.ifross.org/?q=en/physnet-package-license
[2] https://www.ifross.org/?q=en/user/login&destination=comment/reply/565%23comment-form
[3] https://www.ifross.org/?q=en/category/lizenzordnung/open-source-lizenzen/iv-lizenzen-wahlmoeglichkeiten
[4] https://www.ifross.org/?q=en/category/tags/physnet-package-license