1. Radiation Safety Standards (RSS-99/2009). SanPiN 2.6.1.2523-09 (Moscow, 2009) [in Russian].
2. Recommendations R 52.18.820-2015. Assessment of Radiation-ecological Effects on Environmental Objects from the Radiation Monitoring Data (VNIIGMI-MTsD, Obninsk, 2015) [in Russian].
3. Collected Recommendations R 52.18.852-2016 and R 52.18.853-2016. An Order of Calculation of the Reference Levels of Radionuclide Concentration in Environmental Objects (VNIIGMI-MTsD, Obninsk, 2016) [in Russian].
4. Radiation Conditions in Russia and Neighboring Countries in 2015. The Yearbook (VNIIGMI-MTsD, Obninsk, 2016) [in Russian].
5. AMAP Assessment 2015: Radioactivity in the Arctic. Arctic Monitoring and Assessment Programme (AMAP) (Oslo, Norway, 2016).