1. Globus, M., Grinov, B., and Kim, J.K., Inorganic Scintillators for Modern and Traditional Applications, Kharkiv: National Academy of Sciences of Ukraine, 2005.
2. Zhu, R.Y., Stone, H., Newman, H., et al., A Study on Radiation Damage in Doped BGO Crystals, Nucl. Instrum. Methods Phys. Res., Sect. A, 1991, vol. 302, pp. 69–75.
3. Korzhik, M.V., Kudryavtseva, A.P., Lyubetskii, S.V., et al., Effect of Ytterbium Ion Impurities on the Spectroscopic and Scintillation Properties of Bi4Ge3O12 Single Crystals, Zh. Prikl. Spektrosk., 1992, vol. 57, nos. 3–4, pp. 299–303.
4. Shim, J.B., Yoshikawa, A., Nikl, M., et al., Radio-, Photo- and Thermo-Luminescence Characterization in Eu3-Doped Bi4Ge3O12 Single Crystal for Scintillator Applications, Opt. Mater., 2003, vol. 24, pp. 285–289.
5. Moleva, V.S. and Peizulaev, Sh.I., Spectroscopic and Spectrochemical Determination of 27 Elemental Impurities in Bismuth and Its Compounds, in Metody analiza veshchestv vysokoi chistoty (Analysis of High-Purity Sub-stances), Moscow: Nauka, 1965, pp. 331–335.