^○J.A. Shaw ¹, L.M. Dahl ¹, M.J. Tauc ¹ (1.Montana State Univ. (USA))

^○T. Horiguchi ¹, Y. Otani ¹, N. Hagen ¹ (1.Utsunomiya Univ. (Japan))

^○N.N. Tipol ¹, S. Kawabata ², Y. Otani ¹, N. Hagen ¹ (1.Utsunomiya Univ. (Japan), 2.Tokyo Polytech Univ. (Japan))

N. Al-wassiti ², E.A. Bibikova ^1,2, ^○N.D. Kundikova ^1,2 (1.Inst. of Electrophysics, UD of RAS (Russia), 2.South Ural State Univ. (Russia))

A. Shevchenko ¹, M. Roussey ², A.T. Friberg ², ^○T. Setälä ² (1.Aalto Univ. (Finland), 2.Univ. of Eastern Finland (Finland))

^○O.R. Nuñez ¹, N.C. Bruce ¹ (1.UNAM (Mexico))

^○R. Antos ¹, M. Veis ¹, J. Mistrik ², K. Palka ², P. Janicek ², M. Karlovec ², M. Vlcek ² (1.Charles Univ. (Czech Republic), 2.Univ. of Pardubice (Czech Republic))

^○E.F. Mosso ¹ (1.Univ. of Tarapaca (Chile))