1. Numerical tables for beta-decay and electron capture. Landolt-Börnstein, New Series;Behrens,1969
2. A high-luminosity, high-resolution study of the end-point behaviour of the tritium beta-spectrum (II);Bergkvist;Nucl. Phys.,1972
3. Bregadze Yu. I. (1978) See Unteweger et al., 1980 for information regarding this Russian calibration
4. Integral alpha and point conversion ratio measurements in advanced fuels critical assemblies;Bretscher;Trans. Am. Nucl. Soc.,1978
5. Calibrations of a tritium extraction facility;Bretscher,1983