https://creativecommons.org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue English German Kirchheim, 2005 determination method: SHA-1
https://creativecommons.org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue English German Kirchheim, 2005 determination method: SHA-1