1. Measurements of the half-life of the 2νββ-decay of 76 Ge;Avignone;J. Phys. G: Part. Phys.,1991
2. Gamma- and X-ray Spectrometry with Semiconductor Detectors;Debertin,1988
3. Scintillation Spectroscopy of Gamma-Radiation;Shafroth,1967
4. Factor analysis and its Generalization;Blahus,1985
5. Experimental comparison of least-squares and maximum likelihood methods in factor analysis