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[1]
例如，有关200 Gev/c 碰撞的数据可参看:R. Singer et al., Phys. Lett., 49B (1974), 481;B. Y. Oh, et al., Phys. Lett., 56B (1975), 400; Y. Cho of al., Phys. Rev. Lett，31 (1973), 413;T. Ludlam et al., Phys. Lett., 48B (1974), 449.[2] N.N. Biswas et al., Phys. Rev. Lett., 35 (1975), 1059.[3] L.Foa, Phys. Reports, 22C (1975), 1.[4] 见 A. Krzywicki. et al., Phys. Lett., 57 (1975), 369 文末的参考文献[4-5 ] .[5] C. Quigg, P. Piril and G. Thomas, Phys. Rev. Lett., 34 (1975). 290.[6] P. Piril, G. Thomas and C. Quigg, Phys. Rev., D12 (1975), 92.[7] T. Ludlam and R. Slansky, Phys. Rev., D12 (1975), 65.[8] C. Quigg, J. M. Wang and C. N. Yang, Phys. Rev. Lett., 28 (1972). 1290.[9] C. F. Chew and A. Pignotti, Phys. Rev., 176 (1968), 2112; C. E. DeTars, Phys. Rev., D3(1971), 128.[10] J. Whitmore, Phys. Reports, 27C (1976), 189.[11] 刘汉昭，中国科学，1978, 5, 508:科学通报，21(1976), 483.