1. A. Einstein, Letter to Schrödinger, 1928, InLetters on Wave Mechanics, K. Przibram, ed. (Philosophical Library, New York, 1967).
2. L. de Broglie,Compt. Rend. 183, 447 (1926);184, 273 (1927);185, 380 (1927); see also L. de Broglie,Étude critique des bases de l'interpretation actuelle de la méchanique ondulatoire (Gauthier-Villars, Paris, 1963).
3. E. Schrödinger, inLouis de Broglie physicien et penseur, Andre George, ed. (Albin Michel, Paris, 1953), pp. 16?30.
4. D. Bohm,Phys. Rev. 85 (1952), 166?179; see also surveys by H. Freistadt,Nuovo Cimento Suppl. 5, 1 (1957); D. Bohm and J. Bub,Rev. Mod. Phys. 38, 453 (1966); F. Belinfante,A Survey of Hidden-Variable Theories (Pergamon, New York, 1973).
5. D. Bohm,Causality and Chance in Modern Physics (Harper and Row, New York, 1957); see also D. Bohm,Found. Phys. 1, 359 (1972).