1. H. Fritzsch, M. Gell-Mann, in: Proceedings of the XVI International Conference on High Energy Physics, Chicago-Bativia. 1972, eds. J.D. Jackson, A. Roberts, Vol. 2, p. 135 Batavia NAL: 1973; H. Fritzsch, M.Gell-Mann, H. Leutwyler; Phys. Lett.B47, 365 (1973); S. Weinberg: Phys. Rev. Lett.31, 494, (1973); Phys. Rev.D8, 4482 (1973); D.J. Gross, F. Wilczek: Phys. Rev.D8, 3633 (1973); H. Politzer: Phys. Rev. Lett.30, 1346 (1973)
2. Several review articles about glueballs are quoted in [3] of [5] below. See also, S.J. Lindenbaum in: Proc. of the International Europhys. Conf. on High-Energy Physics, pp. 351?360, eds. J. Guy, C. Costain, Brighton, U.K., 1983; Comm. Nucl. Part. Phys.13, 285 (1984);
3. C.A. Heusch: Report No. SLAC-PUB-3556 (January 1985)
4. K. Ishikawa: Phys. Rev.D20, 731 (1979); J.J. Coyne, P.M. Fishbane, S. Meshkov: Phys. Lett.91B 259 (1980)
5. A. Etkin et al.: Phys. Rev.D25, 1786 (1982); ibid. 2446 (1982); S. Minami: Lett. Nuovo Cimento35, 102 (1982); ibid36, 551 (1983)