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Sorai, M.; Murakawa, S.; Kotani, T.; Suga, H., Heat capacity of a cubane-tetramer, [Ni(OCH3)(SAL)(CH3OH)]4, between 0.4 and 288K: spin-spin interactions and tunnel-splitting of the internal rotation of methyl-groups, J. Phys. Chem. Solids, 1983, 54(12), 1133-1139. [all data]