TY JOUR TI About Defining the Borders of Radioactive Contamination Zones as a Result of Large Radiation Accidents. Message II. The Principled Approach KW radiation accidents KW zone of radioactive pollution KW border of a zone of radioactive pollution KW the Chernobyl accident JO Medical Radiology and radiation safety AU Skorobogatov, A.M. AU Germenchuk, M.G. AU Simonov, A.V. AU Zhukova, O.M. AU Apanasyuk, O.N. PY 2017 IS 62 PB Federal Medical Biological Agency of Russia