1. G. S. Bochkarev, V. A. Eremenko, Yu. N. Cherkashin, et al., J. Atmos. Terr. Phys., 44, No. 12, 1137 (1982).
2. D. E. Hinkel-Lipsker, M. M. Shoucri, T. M. Smith, et al., Radio Sci., 25, No. 5, 819 (1993).
3. A. V. Gurevich, K. P. Zybin, and H. C. Carlson, Radiophys. Quantum Electron., 48, No. 9, 686 (2005).
4. A. M. Nasyrov, Scattering of Radio Waves by Anisotropic Ionospheric Irregularities [in Russian], Kazan’ Univ., Kazan’ (1991).
5. G. G. Vetrogradov, V. N. Shevchenko, and N. M. Ivanov, in: Proc. 5th Int. Sci.-Tech. Conf. “Radar, Navigation, and Communication,” Voronezh, April 20–23, 1999, Vol. 2, p. 1188.