1. I. O. Troyanchuk and A. N. Chobot, Kristallografiya 42(6), 1058 (1997) [Crystallogr. Rep. 42 (6), 983 (1997)].
2. Z. Zeng, M. Greenblatt, J. E. Sunstrom IV, M. Croft, and S. Khalid, J. Solid State Chem. 147, 185 (1999).
3. V. S. Rusakov, I. A. Presnyakov, A. V. Sobolev, T. V. Gubaidulina, A. V. Baranov, G. Demazeau, K. M. Veselova, O. S. Volkova, and A. N. Vasil’ev, Zh. Eksp. Teor. Fiz. 135(4), 692 (2009) [JETP 108 (4), 605 (2009)].
4. V. S. Rusakov, Mössbauer Spectroscopy of Locally Inhomogeneous Systems (Institute of Nuclear Physics, National Nuclear Center of the Republic of Kazakhstan, Almaty, 2000).
5. R. Ingals, A. Van der Woude, and G. A. Sawatzky, in Mössbauer Isomer Shifts, Ed. by G. K. Shenoy (North-Holland, Amsterdam, The Netherlands, 1978), Chap. 7.