https://web.archive.org/web/20170216192316/https://www.uni-bamberg.de/psychologie/theoretische-psychologie/forschung/downloads/	Source/Quelle 2026-01-10
https://www2.informatik.uni-hamburg.de/TGI/forschung/projekte/sozionik/journal/2/	See "psi" 2026-01-10