M.V. Nikitin - Probationer Researcher, Kotel-nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences. E-mail: nikitin@cplire.ru
V.Ya. Pokrovskii - Dr.Sc. (Phys.-Math.), Leading Research, Kotel-nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences. E-mail: pok@cplire.ru
S.G. Zybtsev - Ph.D. (Phys.-Math.), Senior Research, Kotel-nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences. E-mail: zybt@cplire.ru
Mandar M.Dezmuch - Professor of the Institute of Basic Research, Mumbai, India. E-mail: deshmukh@tifr.res.in