1. N. Bohr, in Albert Einstein Philosopher-Scientist, ed. by P. A. Schlip, p. 200, The library of Living Philosophers, Evaston (1949)
2. J. von Neumann, Mathematische Grundlagen der Quantemmechanik, cap. V and VI , (Springer, Berlin, 1932); English translation: Mathematical Foundation of quantum Mechanics, (Princeton University Press, Princeton N.J. ,1955)
3. B. D'Espagnat (ed.), Foundation of quantum mechanics (Academic Press, New York and London, 1971)
4. J. A. Wheeler, W. H. Zurek, Quantum Theory and Measurement, (Princeton University Press, Princeton N. J., 1981)
5. S. Kamefuchi et al. eds., Proceedings of the international symposia "Foundation of Quantum Mechanics in thr light of new technology" (ISQM ),pp. 1–9, Tokio (1984–2009).