1. H. Du, S. W. Lee, J. Gong, et al., Mater. Lett. 58, 1117 (2004).
2. D. A. Yavsin, V. M. Kozhevin, S. A. Gurevich, et al., in Proceedings of the International Conference on Physics, Chemistry, and Applications of Nanostructures “Nanomeeting-2005” (Minsk, 2005), p. 148.
3. Ya. B. Soskovets, A. Ya. Khaĭrullina, T. A. Zhevlakova, and V. A. Tolmachev, Opt. Spektrosk. 96(6), 1008 (2004).
4. P. Johnson and R. Christy, Phys. Rev. B 9(12), 5056 (1974).
5. Handbook of Optical Constants of Solids, Ed. by E. D. Palik (Academic, Orlando, 1985).