H. Langevin-Joliot, E. Gerlic, J. Guillot, M. Sakai, J. van de Wiele, et al.. New evidence for deep-lying hole strength in $^{115}$Sn and $^{207}$Pb via the ($^3$He $\alpha$) reaction at 283 MeV.
Physics Letters B, Elsevier, 1982, 114, pp.103-106.
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