1. T. Moriya, Spin Fluctuations in Itinerant Electron Magnetism (Springer, Berlin, 1985; Mir, Moscow, 1988).
2. A. K. Arzhnikov, L. V. Dobysheva, E. P. Elsukov, and A. V. Zagaĭnov, Zh. Éksp. Teor. Fiz. 110(3), 1127 (1996) [JETP 83 (3), 623 (1996)].
3. V. Jaccarino and L. R. Walker, Phys. Rev. Lett. 15, 258(1965).
4. A. K. Arzhnikov and L. V. Dobysheva, J. Magn. Magn. Mater. 117, 87 (1992).
5. A. K. Arzhnikov, L. V. Dobysheva, and F. Brauers, Fiz. Tverd. Tela (St. Petersburg) 42(1), 86 (2000) [Phys. Solid State 42 (1), 89 (2000)].