1. 1. Sanitary Standard of Specific Activity of 137Cs and 90Sr in Wood and Products of Wood (HNPAR, 2005) 3 p. Approved by the Ministry of Health of Ukraine on 31.10.2005, #573. (Ukr)
2. 2. I.P. Los', N.D. Shabunina, O.O. Orlov et al. Foundation of standard of radionuclides content in the cordwood and its justification assessment. Dovkillya ta Zdorov'ya 2 (2008) 19. (Ukr) http://www.dovkil-zdorov.kiev.ua/env/45-0019.pdf
3. 3. State Hygienic Standards GN 6.6.1.1-130-2006. Acceptable levels of 137Cs and 90Sr in food and drinking water (DR-2006). Ofitsiinyi Visnyk Ukrayiny 29 (2006) 142. (Ukr) http://search.ligazakon.ua/l_doc2.nsf/link1/RE12719.html
4. 4. Assessing radiation doses to the public from radionuclides in timber and wood products. IAEA-TECDOC-1376 (Vienna: IAEA, 2003) 67 p. http://www-pub.iaea.org/MTCD/publications/PDF/te_1376_web.pdf
5. 5. O.O. Orlov, V.V. Dolin (Ed. by E.V. Sobotovych). Biogeochemistry of Cesium-137 in Forest-Swamp Ecosystems of Ukrainian Polissya (Kyiv: Nauk. Dumka, 2010) 198 p. (Ukr)