1. H. W. Leverenz:Luminescence of Solids (New York, 1950);G. F. J, Garlick:Progress in Nuclear Physics (1952), p. 51;J. B. Birks :Scintillation Counters (Pergamon Press, London, 1953);S. C. Curran.:Luminescence and the Scintillation Counters (Butterworths Scientific Publications, London, 1953);R. K. Swank:Annual Review of Nuclear Science (1954), p. 111 ;J. Sharpe:Nuclear Radiation Detectors (Methuen, London, 1955).
2. J. P. Anthony:Journ. de Phys. et Rad.,16, 182 (1955).
3. W. F. Hornyak:Rev. Sci. Instr.,23, 264 (1952); W. S. Emmerich:Rev. Sci. Instr.,25, 69 (1954); P. G. Kontz, G. R. Keepin and J. E. Ashley:Rev. Sci. Instr.,26, 352 (1955).
4. J. D. Graves, J. P. Dyosom:Rev. Sci. Instr.,20, 363, (1949).