Links
[1] https://www.ifross.org/?q=en/php-license-v-30
[2] https://www.ifross.org/?q=en/user/login&destination=comment/reply/451%23comment-form
[3] https://www.ifross.org/?q=en/category/lizenzordnung/open-source-lizenzen/i-lizenzen-ohne-copyleft-effekt/bsdartige-lizenzen
[4] https://www.ifross.org/?q=en/category/tags/version
[5] https://www.ifross.org/?q=en/category/tags/php-license
[6] https://www.ifross.org/?q=en/category/tags/30