1. Ryskin, A.I. and Fedorov, P.P., Donor Impurities and DX Centers in the Ionic Semiconductor CdF2,Fiz. Tverd. Tela (S.-Peterburg), 1997, vol. 39, no. 6, pp. 1050–1055.
2. Skorobogatov, B.S., Dubovik, M.F., Azarov, V.V., and Kol’per, L.B., Electroluminescent and Semiconducting Behavior of Rare-Earth-Doped CdF2 Crystals,Opt. Spektrosk., 1967, vol. 22, no. 6, pp. 931–933.
3. Matecki, M., Poulain, M., and Poulain, M., Verres aux halogénures de cadmium: 1. Verres fluorés,Mater. Res. Bull., 1982, vol. 17, pp. 1275–1281.
4. Sorokin, N.I., Fedorov, P.P., Ivanov-Shits, A.K., and Sobolev, B.P., Fluorine Ionic Conductivity of CdF2-Based Fluorite Solid-Solution Crystals,Fiz. Tverd. Tela (Leningrad), 1988, vol. 30, no. 5, pp. 1537–1539.
5. Kaminskii, A.A., Kurbanov, K., Sarkisov, S.E.,et al., Stimulated Emission of Nd3+ Ions in Non-Stoichiometric Cd1-xCexF2-x and Cd1-xNdxF{2+x} Fluorides,Phys. Status Solidi A, 1985, vol. 90, pp. 55–60.