1. V. S. Butylkin and G. A. Kraftmakher, Pis’ma Zh. Tekh. Fiz. 32(17), 88 (2006) [Tech. Phys. Lett. 32, 775 (2006)].
2. V. S. Butylkin and G. A. Kraftmakher, Pis’ma Zh. Tekh. Fiz. 33(20), 11 (2007) [Tech. Phys. Lett. 33, 861 (2007)].
3. G. A. Kraftmakher and V. S. Butylkin, Proc. Intern. Conf. “Metamaterials-2007” (Rome, 22–24 October, 2007), pp. 268–271.
4. A. L. Mikaélyan, Theory and Application of Ferrites at Microwave Frequencies (Gosénergoizdat, Moscow, 1963) [in Russian].