1. Moor, James H. (1985) What is computer ethics?Metaphilosophy 16 (4): 226–275.
2. Heim, Michael (1993)The Metaphysics of Virtual Reality, Oxford University Press, New York, Oxford.
3. Moor, James H. (1991)Is Ethics Computable? Manuscript, written after 1991.
4. Grun, Bernard (1982)The Timetables of History. A Horizontal Linkage of People and Events. Based on Werner Stein’sKulturfahrplan, Simon and Schuster — A Touchstone Book, New York, p. 217.
5. In 1637, “Geometric” by René Descartes was published. In 1638, Galilco’s “Discorsi e Dimonstrazioni Matematiche.” In 1639, Gerard Desargues published his book on modern geometry.