1. Vavilov, V.P. and Nesteruk, D.A., RF Patent 2284515, 2005.
2. Nesteruk, D.A., Teplovizionnyi kontrol' vody v sotovykh konstruktsiyakh samoletov. Bezopasnaya ekspluatatsiya aviatsionnoi tekhniki s ispol’zovaniem sredstv teplovogo nerazrushayushchego kontrolya (Heat Monitoring of Water in Honeycomb Structures of Aircrafts. Safe Operation of Aeronautical Engineering Using Means of Ther–mal Nondestructive Control), Saarbrucken, Germany: Lambert Academic Publishing, 2012.
3. Hu, B.B. and Nuss, M.C., Imaging with terahertz waves, Opt. Lett., 1995, vol. 20, no. 16, pp. 1716–1718.
4. Jepsen, P.U., Cooke, D.G., and Koch, M., Terahertz spectroscopy and imaging modern techniques and appli–cations, Laser & Photon. Rev, 2011, vol. 5, no. 1, pp. 124–166.
5. Kulipanov, G.N., Gavrilov, N.G., and Knyazev, B.A., Research highlights from the Novosibirsk 400 W average power THz FEL, Terahertz Sci. Technol., 2008, v. 1, no. 2, p.107–125.