1. K. Seigbahn (ed.), Alpha-, Beta-and Gamma-Spectroscopy [Russian translation], Atomizdat, Moscow (1969).
2. M. F. Yudin et al., Measurement of the Activity of Radionuclides [in Russian], Poligrafist, Ekaterinburg (1999).
3. K. S. A. Butcher et al., Nucl. Instrum. and Methods. A, 450, 30 (2000).
4. H. Y. Hwang et al., Nucl. Instrum. and Methods. A, 413, 228 (1998).
5. V. I. Chernyshev and S. V. Korostin, ANRI, No. 4(35), 50 (2003).