1. Barber, W. C.: Specific ionization by high energy electrons. Phys. Rev.97, 1071 (1955).
2. Barnard, G. P., Aston, G. H., Marsh, A. R. S.: Effects of variations in the ambient air on the calibration and use of ionization dosemeters. National Physical Laboratory. London: Her Majesty's Stationery Office 1960.
3. Bewley, D. K.: The measurement of locally absorbed dose of megavoltage X-rays by means of a carbon calorimeter. Brit. J. Radiol.36, 865 (1963).
4. Booz, J., Ebert, H. G.: Mittlerer EnergieaufwandW zur Bildung eines Ionenpaares in Gasen durch Elektronen, Beta-, Gamma- und Röntgenstrahlung. Strahlentherapie120, 7 (1963).
5. Bradshaw, A. L.: Calorimetric measurement of absorbed dose with 15 MeV electrons. Phys. Med. Biol.10, 355 (1965).