1. Yu. Trofimov, L. Survilo, E. Ostretsov, et al., in Proc. 3rd Int. Workshop Nanohard, Velingrad, Bulgaria, May 13–16, 2007 (Inst. Appl. Phys. Bulgar. Acad. Sci., Plovdiv, 2007), p. 91.
2. D. Strateichuk, E. Ostretsov, V. Shtanov, et al., Inorg. Mater. 44(1), 6 (2008).
3. N. Kh. Abrikosov and L. E. Shelimova, Semiconductor Chalcogenides and Alloys on Their Basis (Nauka, Moscow, 1975) [in Russian].
4. H. Bube, Photoconductivity of Solids (Wiley, New York, 1960; Inostrannaya Literatura, Moscow, 1962) [in Russian].
5. L. P. Pavlov, Semiconductor and Microelectronic Devices (Vysshaya Shkola, Moscow, 1987) [in Russian].