1. A. Abragam, The Principles of Nuclear Magnetism (Clarendon Press, Oxford, 1961).
2. M. I. Kurkin and E. A. Turov, NMR in Magnetically Ordered Materials and Its Applications (Nauka, Moscow, 1990).
3. I. Solomon, Phys. Rev. 110, 61 (1958).
4. G. N. Abelyashev, V. N. Berzhanskii, N. A. Sergeev, and Yu. V. Fedotov, Zh. Éksp. Teor. Fiz. 94(1), 227 (1988) [Sov. Phys. JETP 67, 127 (1988)].
5. G. N. Abelyashev, V. N. Berzhanskii, S. N. Polulyakh, N. A. Sergeev, and Yu. V. Fedotov, Zh. Éksp. Teor. Fiz. 100, 1981 (1991) [Sov. Phys. JETP 73, 1096 (1991)].