1. R. E. Franclin, Acta Crystallogr. 3, 253 (1951).
2. S. V. Shulepov, Physics of Graphitic Carbon Materials (Metallurgiya, Moscow, 1972).
3. A. Herold, NATO ASI Ser., Ser. B 172, 3 (1987).
4. M. S. Dresselhaus, Proc. NATO, Ser. B 16, 102 (1980).
5. V. V. Avdeev, V. Ya. Akim, N. B. Brandt, et al., Zh. Éksp. Teor. Fiz. 94(12), 188 (1988) [Sov. Phys. JETP 67, 2496 (1988)].