Geographical location and extent of radioactive contamination. Swiss Agency for Development and Cooperation. [2009-04-15]. (原始内容存档于2007-06-30). (quoting the "Committee on the Problems of the Consequences of the Catastrophe at the Chernobyl NPP: 15 Years after Chernobyl Disaster", Minsk, 2001, p. 5/6 ff., and the "Chernobyl Interinform Agency, Kiev und", and "Chernobyl Committee: MailTable of official data on the reactor accident")
Geographical location and extent of radioactive contamination. Swiss Agency for Development and Cooperation. [2009-04-15]. (原始内容存档于2007-06-30). (quoting the "Committee on the Problems of the Consequences of the Catastrophe at the Chernobyl NPP: 15 Years after Chernobyl Disaster", Minsk, 2001, p. 5/6 ff., and the "Chernobyl Interinform Agency, Kiev und", and "Chernobyl Committee: MailTable of official data on the reactor accident")