Pure strontium-87 isotope in rubidium biotite from the ukrainian shield

by Andreev, A.V., Valter, A.A., Dikiy, N.P., Dovbnya, A.N., Eremenko, G.K., Lyashko, Yu.V., Pisansky, A.I., Storizhko, V.E., Uvarov, V.L.
Published 2011