[1] A. Bramon, A. Grau and G. Pancheri, Phys. Lett. B317 (1993) 190.
[2] S. I. Eidelman, Z. K. Silagadze and E. A. Kuraev, Phys. Lett. B346 (1995) 186.
[3] S. I. Dolinsky et al., Phys. Rep. 202 (1991) 99.
[4] G. Pancheri, Nuovo Cim. A107 (1994) 2149.
8
[5] U.-G. Meissner, Phys. Rep. 161 (1988) 213.
[6] G. Ecker, H. Leutwyler, J. Gasser, A. Pich and E. de Rafael, Phys. Lett. B223 (1989) 425.
[7] M. C. Birse, University of Manchester preprint MC/TH 95/08, hep-ph/9507202.
[8] L. M. Kurdadze et al., JETP Lett. 47 (1988) 512.
[9] V. M. Aulchenko et al., Novosibirsk preprint YAF 87-90 (1987).
[10] D. Parashar, Phys. Rev. D26 (1982) 1183.
[11] M. Bando, T. Kugo S. Uehara, K. Yamawaki and T. Yanagida, Phys. Rev. Lett. 54 (1985)
1215.
[12] M. Bando, T. Kugo and K. Yamawaki, Phys. Rep. 164 (1988) 217.
[13] ¨O . Kaymakcalan, S. Rajeev and J. Schechter, Phys. Rev. D30 (1984) 594; H. Gomm, ¨O.
Kaymakcalan and J. Schechter, ibid. 2345.
[14] Y. Brihaye, N. K. Pak and P. Rossi, Nucl. Phys. B254 (1985) 71.
[15] J.F. Donoghue, E. Golowich and B.R. Holstein, Dynamics of the standard model, (Cambridge
University Press, Cambridge 1992).
[16] S. Weinberg, Phys. Rev. 166 (1968) 1568.
[17] S. Coleman, J. Wess and B. Zumino, Phys. Rev. 177 (1969) 2239; C. G. Callan, S. Coleman,
J. Wess and B. Zumino, ibid. 2247.
[18] T. Fujiwara, T. Kugo, H. Terao, S. Uehara and K.Yamawaki, Prog. Theor. Phys. 73 (1985)
926.
[19] K. Kawarabayashi and M. Suzuki, Phys. Rev. Lett. 16 (1966) 255; Riazuddin and Fayyazuddin,
Phys. Rev. 147 (1966) 1071.
[20] V. de Alfaro, S. Fubini, G. Furlan and C. Rossetti, Currents in hadron physics, (North Holland,
9
Amsterdam, 1973).
[21] R. Kumar, Phys. Rev. 185 (1969) 1865.
[22] T. W. Sag and G. Szekeres, Math. Comput. 18 (1964) 245.
[23] B. W. Lee and H. T. Nieh, Phys. Rev. 166 (1968) 1507.
[24] S. Gasiorowicz and D. A. Geffen, Rev. Mod. Phys. 41 (1969) 531.
[25] S. Weinberg, Phys. Rev. Lett. 18 (1967) 507.
[26] E. A. Kuraev and Z. K. Silagadze, hep-ph/9502406.