• [1]

    S. L. Glaehow, Nucl. Phys., 22(1961), 579; S. Weinberg, Phys. Rev. Lett., 19(1967);1284; A. 8alam. Proc. of the 8th Nobel Symposium, Stockholm 1968, ed, by N. Svartholm, p. 367.[2] J. C. Pati sad A. Salam, Phys. Rev. Lett., 31(1973), 661;H. Georgi and S. L. Glaehow, Phys. Rev. Lett., 32(1974), 438.;J. C. Pati and A. Salam, Phys. Rev., D10(1974), 275; H. Fritzech and P. Minkoweki, Ann. Phys., 93(1975), 193; Nucl. Phys., B103(1976), 61;H.(ieorgi, Particles and Fields, 1974 (APS/DPF Williameburg), ed. C. E. Carleon (AIP, New York, 1975), p. 575; S. L. Glashow, Harvard Preprint HUTP-77/A005 (1977);M. 8. Chano-wits, J. Ellis and M.K.Gaillard, Nucl. Phys., B128(1977), 506. There is an appendix; Tensor Formulation of S0(10).[3] Z. Q. Ma, T. S. Tu, P. Y. Xue and Z. W. Yue, BIHEP-TH-1, 1980.[4] Z. Q. Ma, T. S. Tu, P. Y. Xue and Z. W. Yue, BIHEP-TH-2, 1980.[5] H. Georgi, HUTP-79/A013 (1979);H. (Georgi, Nucl . Phys, B156 (1979 ) , 126;R. Barbieri and D. V. Nanopoulos, Ret. TH, 2810---CERN (1980).[6] J. Kirkby, Froc. of the 1979 International Symposium on Lepton and Photon Interaction at High Energies, Batavia, 1979, SLAC-PUB-2419.[7] J. Banks and H. Georgi, Phys. Rev., D14(1976), 1159; S. Okubo, Phys. Rev., D16(1977), 3528.[8] H. Georgi and D. V. Nanopoulos, Phys. Lett,82B(1979), 392.[9] K. C. Chou and C. S. Gao, SLAGPUB-2445, 1979.[10] D. P. Barber et al.,"The first year of Mark J at PETRA" (1980).[11] S. Weinberg, Phys. Rev., D7(1973), 1068.[12] H. Georgi, H. R. Quinn and S. Weinbererg, Phys. Rev. Lett., 33(1974), 451[13] M. Gell-Mann and F. E. Low, Phys. Rev., 95(1954), 1300; C. G. Callan, Phys. Rev..D2(1970), 1541.[14] L. Hall, HUTP-80/A024.