1. N. Holtkamp, presented at The HEPAP Meeting (USA, 2012).
2. R. Hamm, in Proc. 4th Int. Particle Accelerator Conf., Shanghai, 2013, p. 2100.
3. Radiation Hygiene Certificate of the Russian Federation (Fed. Tsentr Gig. Epidemiol. Rospotrebnadzora, Moscow, 2013) [in Russian].
4. A. P. Chernyaev, Phys. Part. Nucl. 43, 262 (2012).
5. A. P. Chernyaev, Ionizing Radiation (Moscow, 2014) [in Russian].