1. Proc. Internat. Conf. Phonon Scattering in Solids, Paris 1972 (p. 338).
2. See for example: The Physics of Se and Te, Pergamon Press, Montreal 1967 (p. 255).
3. Thesis, University of Grenoble, 1967.
4. The Specific Heat of Crystalline Selenium at Low Temperatures