@article{Perevalova2015spatial,
author={Perevalova, N.P. and Romanova, E.B. and Katashevtseva, D.D. and Timofeeva, O.V.},
title={Spatial distribution of total electron content in the Arctic region of Russia from GPS data},
journal={Solnechno-Zemnaya Fizika},
publisher={INFRA-M Academic Publishing LLC.},
year={2015},
pages={40-46},
volume={1},
issue={4},
}