1. A. I. Khomenko, Fizika Metallov i Metallovedenie, 104, 155 (2007).
2. V. M. Kalinin, F. N. Dunaev, and V. A. Kornyakov, Izv. Vuzov, No. 5, 129 (1970).
3. K. Uhlman, C. Bardehle, St. Baunack, and F. Storbeck, Crystal. Res. & Technol., 20, No. 2, 227 (1985).
4. S. P. Chenakin, Appl. Surface Sci., 1 (1995).
5. C. R. Brundle, AIP Conf. Production, 61, 57 (1980).