S. A. Dmitriev, SIA Radon (Russia)
; A. E. Savkin, SIA Radon (Russia)
; A. P. Varlakov, SIA Radon (Russia)
; S. V. Kovalskaya, SIA Radon (Russia)
; O. A. Gorbunova, SIA Radon (Russia)
; V. N. Lazarev, SSC RF Physics and Energy Institute (Russia)
; V. I. Smolyakov, SSC RF Physics and Energy Institute (Russia)
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