1. Ambrazevičienė V., Brazis R., Paršeliūnas J., Fiz. Tekh. Polupr., 1984, v. 18, N 4, p. 741–743 (in Russian); English transl. in: Soviet Phys.: Semicond.
2. Ambrazevičienė V., Brazis R., Kunigėlis A., 9-th Int. Conf. Infrared and Millimeter Waves (Conference Digest), Takarazuka, Japan, 1984, p. 532–533.
3. Belyantsev A.M., Kozlov V.A., Piskaryov V.I., Infrared Phys., 1981, v.21, N 1, p. 79–84.
4. Ambrazevičienė V., Brazis R., Kunigėlis A., Shiktorov P., Fiz. Tekh. Polupr., 1982, v.16, N 8, p. 1502–1504 (in Russian); English transl. in Soviet Phys.: Semicond.
5. Ambrazevičienė V., Brazis R., Gaidelis V., Kunigėlis A., 7-th Int. Conf. Infrared and Millimeter Waves (Conference Digest), Marseille, 1983, p. 203.