1. H. Jones, Physics of Radiology [Russian translation], Atomizdat, Moscow (1965).
2. G. V. Gorshkov, Penetrating Radiation of Radioactive Sources [in Russian], Nauka, Leningrad (1967).
3. A. M. Gurvich et al., Transactions of the All-Union Scientific Research Institute for Medical Instruments and Equipment [in Russian], No. 5, 40 (1962).
4. Yu. K. Akimov et al., Semiconductor Detectors for Nuclear Particles and Application of these Detectors [in Russian], Atomizdat, Moscow (1967).
5. N. G. Volkov and V. K. Lyapidevskii, Pribory i Tekh. Éksperim., No. 5, 86 (1968).