1. Keffer, F.(1966), in S. Flugge (ed.), Handbuch der Physik, Band XVIII/2, Springer Verlag, Berlin, p.l.
2. Wigen, P.E. (1984), Thin Solid Films
114, 135
3. Frait, Z. and Fraitová, D. (1988) in A.S. Borovik - Romanov and S.K. Sinha (eds.), Spin Waves and
Magnetic Excitations, vol. 2, North - Holland, Amsterdam, p.l.
4. Soohoo, R.F. (1965); Magnetic Thin Films, Harper & Row, New York.
5. Gurevich, A.G.(1973), Magnitnyj Rezonans v Ferritach i
Antiferromagnetikach, Nauka, Moscow.