1. Yushchuk, S.I., Tekhnol. Konstr. Elektron. Appar., 1998, no. 1, p. 35.
2. Yushchuk, S.I. and Kostyuk, P.S., Instrum. Exp. Tech., 1996, vol. 39, p. 858.
3. Yushchuk, S.I., Yur’ev, S.A., Kostyuk, P.S., and Nikolaichuk, V.I., Instrum. Exp. Tech., 2011, vol. 54, p. 712.
4. Kostyuk, P.S., Kuz’mik, A.G., Matkovskii, A.O., et al., in Fizicheskaya elektronika (Physical Electronics), Lvov: Lvov. Univ., 1987, no. 35, p. 100.
5. Yushchuk, S.I., Kostyuk, P.S., and Loboiko, V.I., Inorg. Mater., 2002, vol. 38, p. 179.