V. V. Popov - Institute of Radio-Engineering and Electronics
D. V. Fateev - Institute of Radio-Engineering and Electronics
T. Otsuji - Research Institute of Electrical Communication [Sendai]
Y. M. Meziani - Departamento de Fisica Aplicada [Salamanca]
Dominique Coquillat - Université de Montpellier, Laboratoire Charles Coulomb - L2C
Wojciech Knap - Université de Montpellier, Laboratoire Charles Coulomb - L2C