1. McDougall, D., Thermoluminescence of Geological Materials (Academic Press, 1968).
2. Goldberg, P., Luminescence of Inorganic Solids (Academic Press, 1966).
3. Curie, D., Luminescence Cristalline (Dunod, Paris, 1960).
4. Afordakos, G., thesis, Univ. Athens (1972).