1. Kaminskii, A.A., Crystalline Lasers: Physical Processes and Operating Schemes, Laser Science & Technology Series, CRP Press, 1996.
2. Globus, M.E. and Grinyov, B.V., Inorganic Scintillation Crystals: New and Traditional Materials, Kharkov: Acta, 2000.
3. Basiev, T.T., Sobol, A.A., Zverev, P.G., Osiko, V.V., and Powell, R.C., J. Appl. Optics, 1999, vol. 38, p. 594.
4. Daturi, M., Busca, G., Borel, M.M., Leclaire, A., and Piaggio, P., J. Phys. Chem. B, 1997, vol. 101, p. 4358.
5. Oeder, R., Scharmann, A., Schwabe, D., and Vitt, B., J. Crystal Growth, 1978, vol. 43, p. 537.