@article{2021-04-27,
author = {},
title = {},
year = {2021},
doi = {10.2478/SJECR-2018-0040},
publisher = {NP «NEICON»},
abstract = {},
URL = {https://covid19.neicon.ru/publication/3453},
eprint = {https://covid19.neicon.ru/files/1448},
}