-
[1]
T. H. R. Skyrme, Proc. Roy. Soc., A260(1961), 127.N. K. Pak and H. C. Tze, Ann. Phys, 117(1979), 164.A. P. Balachandran, V. P. Nair, A. G. Rajeev, and A. Stern, Phys. Rev., D27(1983), 1153.[2] E. Witten, Nucl. Phys., B223(1983), 433.[3] G. Adkins, C. Nappi, and E. Witteri, Nucl. Phys., B228(1983), 552.[4] G. Adkins and C. Nappi, Nucl. Phys., B233(1984), 109.[5] Bing-an Li and Qi-xing Shen, Commun., in Theor. Phys., 6(1986), 65.