1. R. Reisfeld, C.K. Jørgensen, in: F. De Nataristefani, P. Lecoy, M. Schneegans (Eds.), Heavy Scintillators for Scientific and Industrial Applications. Frontieres, 1993, p. 155
2. M. Weber, in: F. De Nataristefani, P. Lecoy, M. Schneegans (Eds.), Heavy Scintillators for Scientific and Industrial Applications. Frontieres, 1993, p. 99
3. C. Jorgensen, in: C.K. Jørgenson, R. Reisfeld (Eds.), Structure and Bonding 85, Optical and Electronic Phenomenon in Sol–Gel Glasses and Modern Applications, Springer, Berlin, 1996, p. 195
4. C.K. Jørgensen, Oxidation Numbers and Oxidation States, Springer, Berlin, 1969
5. G. Malashkevich, E. Poddenezhny et al., J. Non-Cryst. Solids 188 (1995) 107–117