1. Ch. B. Lushchik, Excitons (Nauka, Moscow, 1985).
2. A. I. Kuznetsov, V. N. Abramov, V. V. Mürk, et al., Fiz. Tverd. Tela 33, 2000 (1991).
3. V. Mürk and O. Svinarenkov, Inorganic Scintillators and Their Applications (Delft University Press, Delft, 1995).
4. V. Mürk, B. Namazov, and B. Yaroshevich, Radiat. Measurements 24(4), 371 (1995).
5. H. P. Jenssen, R. F. Begley, R. Webb, et al., J. Appl. Phys. 47(4), 1496 (1976).