1. G. T. Markov and D. M. Sazonov, Antennas (Energiya, Moscow, 1975) [in Russian].
2. C. A. Balanis, Antenna Theory: Analysis and Design (Wiley, New York, 1997).
3. R. C. Hansen, Electrically Small, Superdirective, and Superconducting Antennas (Wiley, Hoboken, 2006).
4. A. S. Petrov and M. A. Zheksenov, J. Commun. Technol. Electron. 59, 241 (2014).
5. Microwave Devices. Design of Phased Array Antennas, Ed. by D. I. Voskresenskii (Radiotechnika, Moscow, 2003) [in Russian].