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2. Delagrange, H., Logan, D., Rivet, M.F., Rajagopalan, M., Alexander, J.M., Eisman, M.S., Kaplan, M., Ba-l, J.W.: Phys. Rev. Lett.43, 1490 (1979)
3. Logan, D., Rajagopalan, M., Zisman, M.S., Alexander, J.M., Kaplan, M., Kowalski, L.: Phys. Rev. C22, 104 (1980)
4. Logan, D., Kaplan, M., Zisman, M.S., Duek, E.: Phys. Rev. C22, 1080 (1980)
5. Vaz, L.: Unpublished data (1981)