1. d’Espagnat, B. (ed.): 1971, Foundations of Quantum Mechanics (Italian Physical Society, Proceedings of the International School of Physics ‘Enrico Fermi’, Course IL), Academic Press, New York.
2. Hartkämper, A., and Neumann, H. (eds): 1974, Foundations of Quantum Mechanics and Linear Spaces, Springer-Verlag, Berlin.
3. Kostro, L. (ed.): 1988, Problems in Quantum Physics, World Scientific, Singapore.
4. Popper, K.: 1980, The Logic of Scientific Discovery, Hutchinson, London.
5. Selleri, F. (ed.): 1988, Quantum Mechanics versus Local Realism: The Einstein, Podolsky, and Rosen Paradox, Plenum, New York.