S. Agarwal, J. Galin, B. Gatty, D. Guerreau, M. Lefort, et al.. Evidence for a short lifetime and a long lifetime regime in the deep inelastic collisions between $^{40}$Ca and $^{64}$Ni at 182 MeV.
Nuclear Physics A, Elsevier, 1977, 293, pp.230-247.
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