1. G. E. H. Reuter and E. H. Sondheimer, Proc. R. Soc. London, Ser. A 195, 336 (1948).
2. A. E. Kaplan, Radiotekh. Élektron. (Moscow) 9, 1781 (1964).
3. V. G. Andreev, V. A. Vdovin, and A. A. Karabutov, Izv. Ross. Akad. Nauk, Ser. Fiz. 66, 1750 (2002).
4. G. V. Rosenberg, Optics of Thin Coatings (Fizmatgiz, Moscow, 1958).