1. Measurements on radioactivity of ancient roman lead to be used as shield in searches for rare events;Alessendrello;Nucl. Instr. Meth. Phys. Res.,1991
2. Studies with a low-background germanium detector in the Holborn underground laboratory;Barton;Nucl. Instr. Meth. Phys. Res. A,1995
3. Mesure de la Radioactivité d'un Echantillon de Plomb;Certificat d'Etalonnage No. 3629,1985
4. Progress in Ge-spectrometry at the Max-Planck Institute fur Kemphysik Heidelberg;Heusser,1990
5. Cosmic ray interaction study with low-level Ge-spectrometry;Heusser;Nucl. Instr. Meth. Phys. Res.,1996