1. Bell, J.S.: Speakable and Unspeakable in Quantum Mechanics. Cambridge University Press, Cambridge (1987)
2. Greenberger, D.M., Horne, M., Zeilinger, A.: In: Kafatos, M. (ed.) Bell’s Theorem, Quantum Theory, and Conceptions of the Universe. Kluwer Academic, Dordrecht (1989)
3. Hardy, L.: Phys. Rev. Lett. 68, 2981 (1992)
4. Bohm, D.: Phys. Rev. 85, 166 (1952)
5. Bohm, D.: Phys. Rev. 85, 180 (1952)