1. G. Shirane and S. Hoshina, J. Phys. Soc. Jpn., 6, 265 (1951).
2. N.V. Anshukova, B.M. Bulychev, A.I. Golovashkin, L.I. Ivanova, I.B. Krynetskii, A.A. Minakov, A.P. Rusakov, Zh. Éxp. Teor. Fiz. 124, 80 (2003).
3. Youwen Xu., Kramer MJ., Dennis KW., Wu H., O'Connor A., McCallum RW., Malik SK. Yelon WB., Substitution for Ba by light rare-earth in Eu123 solid solutions. Physica C, 341-348, pt.1, Nov. 2000, pp.613-14.
4. I.M. Lifshits, Zh. Éxp. Teor. Fiz. 22, 475 (1952).
5. G.L. Belenkii, R.A.Suleimanov, N.A.Abdullaev, V.Ya.Shteinshraiber, Fiz. Tverd. Tela, 26, 3560 (1984).