1. M. B. Panish, M. Ilegems, in Semiconductor Opto-Electronics, Ed. by and T. S. Moss, G. J. Burrell and B. Ellis (Butterworths, London, 1973; Mir, Moscow, 1979), ch. 2, p. 54.
2. G. B. Stringfellow, J. Cryst. Growth 27, 21 (1974).
3. V. P. Vasil’ev and J.-C. Gachon, Inorg. Mater. 42, 1171 (2006).
4. V. I. Vasil’ev, G. S. Gagis, V. I. Kuchinskii, V. P. Khvostikov, and E. P. Marukhina, Tech. Phys. Lett. 39, 472 (2013).
5. Physical Values, The Handbook, Ed. by I. S. Grigor’ev and E. Z. Meilikhov (Energoatomizdat, Moscow, 1991), p. 255 [in Russian].