1. Proc. 5th Yamada Conf. Point Defects Defect Interact. Met., Kyoro, Japan 1981;Alam,1982
2. Radiation Detection and Measurement.;Knoll,1979
3. Principles of Nuclear Radiation Detection.;Eichholz,1979
4. The influence of geometry on the resolution of a positron annihilation lifetime spectrometer