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Additional information
We consider it a pleasant duty to express our gratitude to R.M. Polevol and to Yu. F. Rodionov, who carried out the measurements of the. γ-spectra on the scintillation spectrometer and proportional counter.
We also thank G. N. Yakovlev and V. A. Vorobyev for placing at our disposal chemically pure preparations of neptunium and curium, and P. E. Ncmirovsky, Ya. A. Smorodinsky, and L. A. Sliv for participating in the considerations of the derived results. We are glad to express our acknowledgement to V. V. Beruchko, S. N. Belenky, and G. V. Shishkin for their help in measuring the electron spectra.
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Baranov, S.A., Sblyagin, K.N. Energy levels of Pu238 and Pu239 nuclei. The Soviet Journal of Atomic Energy 1, 51–65 (1956). https://doi.org/10.1007/BF01516314
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DOI: https://doi.org/10.1007/BF01516314