N. P. Bogachev, E. L. Grigor'ev, Yu. P. Merekov, “Cross-section for the formation of $\mathrm{Li}^8$ in a nuclear emulsion by 9 Bev. protons”, Dokl. Akad. Nauk SSSR, 148:5 (1963), 1046
2.
N. P. Bogachev, E. L. Grigor'ev, Yu. P. Merekov, “Non-elastic interactions of protons with nucleons at 9-Bev energy”, Dokl. Akad. Nauk SSSR, 148:4 (1963), 793–795
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