1. Nikitine, S., Melle L. Wursteisen andJ. P. Eberhart: to be published in this review.
2. —,J. Biellmann,J. L. Deiss,M. Grosmann,J. B. Grun,J. Ringeissen,C. Schwab,M. Sieskind, and Melle L. Wursteisen: Report on the Intern. Conf. on the Physics of Semiconductors, Exeter, 431 (1962).
3. ——, MmeL. Couture, G. Perny andR. Reiss: C. R. Acad. Sc. Paris,241, 629 (1955).
4. ——, andR. Reiss: C. R. Acad. Sc. Paris,242, 238 (1956);244, 1478, 2788 (1957). J. phys. radium,17, 1017 (1956);20, 718 (1959).
5. —, andR. Reiss: Thesis Strasbourg. See also Cahiers de Phys.13, 129 (1959).