1. Bogomol'nyi, E. B.: Yad. Fiz.24, 861?870, (1976) [Sov. J. Nucl. Phys.24, 449 (1976)]; Prasad, M. K., Sommerfeld, C. M.: Phys. Rev. Lett.35, 760 (1975)
2. Nahm, W.: All self-dual multimonopoles for arbitrary gauge groups. (preprint), TH.3172-CERN (1981)
3. Atiyah, M., Hitchin, N. J.: Geometry and dynamics of magnetic monopoles. Princeton, NJ: Princeton University Press 1988
4. Donaldson, S. K.: Commun. Math. Phys.96, 387?407 (1984)
5. See e.g. Monopoles in Quantum Field Theory. Craigie, N. S., Goddard, P., Nahm, W. (eds.). Singapore: World Scientific 1982. For an alternative method of solving the Bogomol'nyi equations based on the Atiyah-Ward (Commun. Math. Phys.55, 117?124 (1977)) approach see Ward, R. S.: Commun. Math. Phys.79, 317?325 (1981); Prasad, M. K.: Commun. Math. Phys.80, 137?149 (1981); Prasad, M. K., Sinha, A., Chau-Wang, L-L.: Phys. Rev.D23, 2321?2334 (1981); Prasad, M. K., Rossi, P. [20]; Ward, R. S.: Phys. Lett.102B, 136?138 (1981); Ward, R. S.: Commun. Math. Phys.80, 563?574 (1981); Corrigan, E., Goddard, P.: Commun. Math. Phys.80, 575?587 (1981). See also Forgás, P., Horváth, Z., Palla, L.: Phys. Lett.102B, 131?135 (1981) and Phys. Lett.109B, 200?204 (1982)