Free contract

Debian自由软件指导方针（英語：Debian Free Software Guidelines，简称DFSG）是Debian项目用来判断自由软件许可证的方针，以决定某软件是否可以包含在Debian之中。它是Debian社群契约（英语：Debian Social Contract）的一部分。 自由的再次发行； 包含源代码；

Debian Social Contract. www.debian.org. [2019-04-16]. （原始内容存档于2011-02-17）. The Debian Free Software Guidelines (DFSG) part of the contract, initially designed

Nuggets Re-Sign Free Agent Will Barton. NBA.com. July 9, 2018 [July 9, 2018]. （原始内容存档于2020-11-29）.  Denver Nuggets Sign Nikola Jokić to Contract Extension.

Debian Social Contract. Debian. [2010-07-12]. （原始内容存档于1999-04-17）. The Debian Free Software Guidelines (DFSG) ... has been adopted by the free software community 

Caupain to Two-Way Contract. NBA. July 11, 2018 [July 11, 2018]. （原始内容存档于2020-09-29）.  Magic Sign Amile Jefferson to Two-Way Contract. NBA. August 7, 2018