66.7-keV γ-line intensity of ^171Tm determined via neutron activation - M. Weigand, T. Heftrich, Ch. E. Düllmann, K. Eberhardt, S. Fiebiger, J. Glorius, K. Göbel, R. Haas, C. Langer, S. Lohse, R. Reifarth, D. Renisch; C. Wolf (American Physical Society (APS), 2018)
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