1. A. G. Gurevich and G. A. Melkov, Magnetic Oscillations and Waves (Fizmatlit, Moscow, 1994) [in Russian].
2. Ferrites in Nonlinear Microwave Hardware (Inostrannaya Literatura, Moscow, 1961) [in Russian].
3. H. Suhl, J. Phys. Chem. Sol. 1(4), 209 (1957).
4. Ya. A. Monosov, Nonlinear Ferromagnetic Resonance (Nauka, Moscow, 1971) [in Russian].
5. V. S. L’vov, Nonlinear Spin Waves (Nauka, Moscow, 1987) [in Russian].