1. Ch. B. Lushchik and A. Ch. Lushchik, Decay of Electronic Excitations with Formation of Defects in Solids [in Russian], Nauka, Moscow (1989).
2. R. T. Williams, Optical Engineering,28, No. 10, 1024–1033 (1989).
3. N. Itoh, Adv. Phys.,31, No. 5, 491–551 (1982).
4. M. A. Élango, Elementary Inelastic Radiation Processes [in Russian], Nauka, Moscow (1988).
5. V. G. Shpak, Prib. Tekh. Éksp., No. 3, 165–167 (1980).