1. S. Mueller, F. Goelden, P. Scheele, M. Wittek, C. Hock, and R. Jakoby, in Proceedings of the 36th European Microwave Conference, Manchester, United Kingdom, 2006 (Manchester, 2006), p. 306.
2. B. A. Belyaev, A. A. Leksikov, A. M. Serzhantov, and V. F. Shabanov, Pis’ma Zh. Tekh. Fiz. 34(11), 19 (2008) [Tech. Phys. Lett. 34 (6), 463 (2008)].
3. O. G. Vendik and M. D. Parnes, in Antennas with Electrical Scanning: Introduction to the Theory, Ed. by. L. D. Bakhrakh (Saĭns-Press, Moscow, 2002) [in Russian].
4. G. S. Iannacchione, G. P. Grawford, S. Zumer, J. W. Doane, and D. Finotello, Phys. Rev. Lett. 71(16), 2595 (1993).
5. G. P. Shinha and F. M. Aliev, Phys. Rev. E: Stat. Phys., Plasmas, Fluids, Relat. Interdiscip. Top. 58(2), 2001 (1998).