1. A. N. Zaidel’, G. V. Ostrovskaya, and Yu. I. Ostrovskii, Technique and Practice of Spectroscopy (Nauka, Moscow, 1976).
2. M. A. Blokhin, Physics of X-rays (GITTL, Moscow, 1957).
3. S. A. Akhmanov and S. Yu. Nikitin, Physical Optics (Mosk. Gos. Univ., Moscow, 1998).
4. A. G. Tur’yanskii and I. V. Pirshin, Prib. Tekh. Éksp., No. 5, 90 (2000).
5. A. G. Tur’yanskii, I. V. Pirshin, R. A. Khmel’nitskii, and A. A. Gippius, Fiz. Tverd. Tela (St. Petersburg) 43 (2001) [Phys. Solid State 43, 644 (2001)].