1. M. I. Solonin and A. S. Polyakov, Nauka i Zhizn`, 11, 40 (2001).
2. S. V. Yudintsev, S. V. Stefanovskii, and B. S. Nikonov, Dokl. Akad. Nauk, 454, No. 2, 211 (2014).
3. N. P. Laverov, S. V. Yudintsev, T. S. Livshits, et al., Geokhimiya, No. 1, 3 (2010).
4. N. P. Laverov, S. V. Yudintsev, S. V. Stefanovskii, et al., Dokl. Akad. Nauk, 443, No. 6, 1 (2012).
5. B. E. Burakov, E. B. Anderson, M. V. Zamoryanskaya, et al., Mat. Res. Soc. Sym. Proc. Scientific Basis for Nuclear Waste Management XXIV, 663, 307 (2001).