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2. Peng, J.C.: ibid., p. 233
3. Liu, L.C.: Proc. 3rd Int. Symp. ongpN andNN Physics, Gatchina 1989. Lopatin, I.V. (ed.) vol. 1, p. 299. Leningrad: Nuclear Physics Institute 1989
4. Chiavassa, E., Dellacasa, G., De Marco, N., Ferrero, F., Gallio, M., Guaita, P., Piccotti, A., Scomparin, E., Vercellin, E.: Nucl. Phys. A538, 121c (1992)
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