1. D. M. Gualtieri and P. E. Tumelty, J. Appl. Phys. 57, 3886 (1985).
2. A. Ya. Chervonenkis and A. M. Balbashov, Magnetic Materials for Microelectronics (Énergiya, Moscow, 1979), p. 102.
3. L. A. Dovbnya and B. V. Khramov, in Proceedings of the International Conference of Young Scientists “Optics-99”, St. Petersburg, 1999.
4. D. I. Craik and G. Myers, Philos. Mag. 31, 489 (1975).
5. A. H. Bobeck and E. Della Torre, Magnetic Bubbles (North-Holland, Amsterdam, 1975; Énergiya, Moscow, 1977).