1. N. I. Kulikov and E. T. Kulatov, J. Phys. F: Met. Phys., 12, No. 10, 2267–2289 (1982).
2. V. S. Stashchuk, O. P. Polianska, and S. I. Stashenko, Ukr. Fiz. Zh., 55, No. 4, 389–393 (2010).
3. V. S. Gushchin, K. M. Shmarev, and B. A. Baum, Izv. Akad. Nauk SSSR, Metally, No. 6, 58–62 (1986).
4. S. N. Khanna, F. Cyrot-Lackmann, and M. C. Desjonqueres, J. Phys. F: Met. Phys., 9, No. 1, 79–84 (1979).
5. L. V. Poperenko, V. S. Stashchuk, and V. V. Vovchenko, Funct. Matter, 7, No. 3, 482–487 (2000).