1. Bense, M. (1955). Vorwort. In L. Couffignal (Ed.), Denkmaschinen. Gustav Kilpper Verlag.
2. Blumenberg, H. (1981). Wirklichkeiten in denen wir leben. Reclam.
3. Brynjolfsson, E., & McAfee, A. (2016). The second machine age: Work, Progress, and prosperity in a time of brilliant technologies. Norton & Company.
4. Cordeschi, R. (2002). The discovery of the artificial: Behavior, mind and machines before and beyond cybernetics. Springer.
5. Couffignal, L. (1955). Denkmaschinen. Gustav Kilpper Verlag.