1. V. S. Dmitriev, Yu. D. Zharkov, D. V. Klokotov, and N. M. Ryskin, Zh. Tekh. Fiz. 73(1), 105 (2003) [Tech. Phys. 48, 901 (2003)].
2. A. S. Dmitriev, A. I. Panas, and S. O. Starkov, Zarubezhn. Radioélektron. Usp. Sovr. Radioé lektron., No. 10, 4 (1997).
3. V. D. Shalfeev, V. V. Matrosov, and M. V. Korzinova, Zarubezhn. Radioélektron. Usp. Sovr. Radioé lektron., No. 11, 44 (1998).