@article{Litvinenko2019the,
author={Litvinenko, N.V. and Yudaev, S.N. and Savostikova, O.G.},
title={The problem of diesel engine emission standards. foreign practice},
journal={Journal of Natural Sciences Research},
publisher={INFRA-M Academic Publishing LLC.},
year={2019},
pages={29-33},
volume={4},
issue={2},
}