M.C. Abreu, V. Berg, J. Oms, K. Heyde, M. Waroquier, et al.. Transition probabilities between the first excited state and the ground state in the N = 81 nuclei $^{139}$Ce, $^{141}$Nd, $^{143}$Sm and $^{145}$Gd.
Nuclear Physics A, Elsevier, 1980, 349, pp.301-308.
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