1. Bernhardt, K.G., Bonn, H., Eberhard, K.A., Vandenbosch, R., Webb, M.P.: Proceedings of the International Conference on Resonances in Heavy Ion Reactions, p. 367, Hvar, Yugoslavia, (1977), Cindro, N. (ed.). Amsterdam: North-Holland 1978
2. Webb, M.P.: Ph.D. Thesis, University of Washington, Seattle 1976 (unpublished)
3. Kolata, J.J., Beck, C., Freeman, R.M., Haas, F., Heusch, B.: Phys. Rev.23, 1056 (1981)
4. Vourvopoulos, G., Aslanglou, X., Kalfas, C.A., Holub, E., Cindro, N., Drake, D.M., Moses, J.D., Peng, J.C., Stein, N., Sunier, J.W.: Nucleonika27, 335 (1982)
5. Abbondanno, U., Demanins, F., Vannini, G., Vannucci, L., Boccaccio, P., Dona, R., Ricci, R.A., Bozin, M., Cindro, N.: J. Phys. G16, 1517 (1990)