Creative Commons Licenses

CC0 1.0 Universal Public Domain Dedication

CC BY-SA 2.0 Attribution-Share Alike 2.0 Generic

CC BY-NC 2.0 Attribution-NonCommercial 2.0 Generic

CC BY 2.5 Attribution 2.5 Generic

CC BY-SA 2.5 Attribution-Share Alike 2.5 Generic

CC BY 3.0 Attribution 3.0 Unported

CC BY-SA 3.0 Attribution-Share Alike 3.0 Unported

CC BY-SA 3.0 DE Attribution-Share Alike 3.0 Germany

CC BY 4.0 Attribution 4.0 International

CC BY-SA 4.0 Attribution-Share Alike 4.0 International