1. R. Olivier: Das mentale System. Unpublished manuscript, Bonn, 1992. Some basic ideas have been published in R. Olivier: Emotionale Felder. In Offenheit — Zeitlichkeit — Komplexität, ed. by K. Kornwachs, Campus Verlag, Frankfurt 1985, pp. 51–109
2. C.G. Jung: The archetypes and the collective unconscious. In The Collected Works of C.G. Jung, Vol. IX/1, Princeton University Press, Princeton 1980
3. R.W. Carter: Simple Groups of Lye Type. Wiley, New York 1972.
4. R.W. Carter: Finite Groups of Lye Type. Wiley, New York 1985
5. J. Tits: Buildings of Spherical Type and Finite BN-Pairs. Springer, Berlin 1974. See also R.W. Carter: Simple Groups of Lye Type. Wiley, New York 1972