Cosmic ray mass composition by the data of Tunka EAS Cherenkov arrays - Budnev, N.M; Chvalaiev, O.A; Gress, O.A; Kalmykov, N.N; Korosteleva, E.E; Kozhin, V.A; Kuzmichev, L.A; Lubsandorzhiev, B.K; Mirgazov, R.R; Navarra, G.; Panasyuk, M.I