1. B.H. Bransden, C.J. Joachain, Physics of Atoms and Molecules, 2nd edn. (Benjamin Cummings, New York, 2003)
2. A. Einstein, B. Podolsky, N. Rosen, Phys. Rev. 47, 777 (1935)
3. J.S. Bell, Physics (Long Island City, N.Y.) 1, 195 (1965), reprinted in Speakable and non-Speakable in Quantum Mechanics, 2nd ed. (Cambridge University Press, Cambridge, England, 2004), pp. 14; in Foundations of Quantum Mechanics, ed. B. d’Espagnat (Academic Press, New York, 1971), pp. 171
4. A.K. Ekert, Phys. Rev. Lett. 67, 661 (1991)
5. C.H. Bennett, G. Brassard, C. Crépeau, R. Jozsa, A. Peres, W.K. Wootters Phys. Rev. Lett. 70, 1895 (1993)