@article{Grachev2019on,
author={Grachev, M.I. and Salenko, Y.A. and Frolov, G.P. and Moroz, B.B.},
title={On the Categorization of Radiological Terrorism Threats},
journal={Medical Radiology and radiation safety},
publisher={Federal Medical Biological Agency of Russia},
year={2019},
pages={37-43},
volume={64},
issue={6},
}