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[1] https://www.ifross.org/?q=en/artikel/android-und-open-source-konzept
[2] https://www.ifross.org/?q=en/user/login&destination=comment/reply/1416%23comment-form
[3] https://www.ifross.org/?q=en/taxonomy/term/14
[4] https://www.ifross.org/?q=en/category/tags/bsd-license
[5] https://www.ifross.org/?q=en/category/tags/apache-software-license
[6] https://www.ifross.org/?q=en/category/tags/android
[7] https://www.ifross.org/?q=en/category/tags/open-source-definiton