@article{Nemchenko2013on,
author={Nemchenko, S.B. and Smirnova, A.A. and Oparina, T.I.},
title={On the classification of emergency situations of the Russian Empire},
journal={Scientific and analytical journal «Vestnik Saint-Petersburg university of State fire service of EMERCOM of Russia»},
publisher={Saint-Petersburg University of State Fire Service of Emercom of Russia},
year={2013},
pages={156-162},
volume={2013},
issue={4},
}