Брюс Перенс.State of Open Source Message: A New Decade For Open Source(англ.) (8 февраля 2008). — «My intent has always been for Open Source to simply be another way of talking about Free Software, tailored to the ears of business people, and that it would eventually lead them to a greater appreciation of Richard Stallman's arguments. This has come to pass, and…» Дата обращения: 30 сентября 2008. Архивировано из оригинала 22 августа 2011 года.
rarlab.com
Portable UnRAR source code (неопр.). license.txt: Евгений Рошал. — «2. UnRAR source code may be used in any software to handle RAR archives without limitations free of charge, but cannot be used to develop RAR (WinRAR) compatible archiver and to re-create RAR compression algorithm, which is proprietary. Distribution of modified UnRAR source code in separate form or as a part of other software is permitted, provided that full text of this paragraph, starting from "UnRAR source code" words, is included in license, or in documentation if license is not available, and in source code comments of resulting package.» Дата обращения: 9 марта 2016. Архивировано 22 августа 2011 года.
Ричард Столлман.Lest CodePlex perplex(англ.). FSF Blogs (5 октября 2009). Дата обращения: 24 октября 2009. Архивировано 22 августа 2011 года.
Брюс Перенс.State of Open Source Message: A New Decade For Open Source(англ.) (8 февраля 2008). — «My intent has always been for Open Source to simply be another way of talking about Free Software, tailored to the ears of business people, and that it would eventually lead them to a greater appreciation of Richard Stallman's arguments. This has come to pass, and…» Дата обращения: 30 сентября 2008. Архивировано из оригинала 22 августа 2011 года.
Portable UnRAR source code (неопр.). license.txt: Евгений Рошал. — «2. UnRAR source code may be used in any software to handle RAR archives without limitations free of charge, but cannot be used to develop RAR (WinRAR) compatible archiver and to re-create RAR compression algorithm, which is proprietary. Distribution of modified UnRAR source code in separate form or as a part of other software is permitted, provided that full text of this paragraph, starting from "UnRAR source code" words, is included in license, or in documentation if license is not available, and in source code comments of resulting package.» Дата обращения: 9 марта 2016. Архивировано 22 августа 2011 года.
