1. I. V. Zakurdaev, Izv. Akad. Nauk SSSR, Ser. Fiz 40, 1554 (1976).
2. B. Z. Olshanetskii, A. I. Nikiforov, and V. I. Mashanov, Fiz. Tverd. Tela (Leningrad) 23, 3136 (1981) [Sov. Phys. Solid State 23, 1825 (1981)].
3. M. Paniccia, P. Flinn, and R. Reifenberger, J. Appl. Phys. 73, 8189 (1993).
4. Zh. I. Alferov, A. Yu. Egorov, A. E. Zhukov, S. V. Ivanov, P. S. Kop’ev, N. N. Ledentsov, B. Ya. Meltser, and V. M. Ustinov, Fiz. Tekh. Poluprovodn. 26, 1715 (1992) [Sov. Phys. Semicond. 26, 959 (1992)].
5. I. V. Zakurdaev, Fiz. Tverd. Tela (Leningrad) 11, 3463 (1969) [Sov. Phys. Solid State 11, 2905 (1969)].