D. A. Shkitov, A. P. Potylitsyn, G. A. Naumenko, H. X. Deng, J. B. Zhang, “Coherent diffraction radiation as a source of radiation in
far-infrared and terahertz range”, Pis'ma v Zh. Èksper. Teoret. Fiz., 99:3 (2014), 138–140; JETP Letters, 99:3 (2014), 121–123
