@article{Demyanov2021space,
author={Demyanov, V.V. and Yasyukevich, Y.V.},
title={Space weather: risk factors for Global Navigation Satellite Systems},
journal={Solnechno-Zemnaya Fizika},
publisher={INFRA-M Academic Publishing LLC.},
year={2021},
pages={30-52},
volume={7},
issue={2},
}