1. J. von Neumann:Mathematical Foundation of Quantum Mechanics (Princeton University Press, Princeton, N.J., 1955).
2. B. D’Espagnat:Conceptual Foundations of Quantum Mechanics, Second Edition (Addison-Wesley publishing Co., New York, N.Y., 1976);Selected Papers on the Theory of Measurement in Quantum Mechanics, edited byM. M. Yanase, M. Namiki andS. Machida (Physical Society of Japan, Tokyo, 1978).
3. E. P. Wigner:Amer. J. Phys.,31, 6 (1963).
4. A. Daneri, A. Loinger andG. M. Prosperi:Nucl. Phys.,33, 297 (1962).
5. H. S. Green:Nuovo Cimento,9, 880 (1958).