@article{Golubeva2018variations,
author={Golubeva, E..},
title={Variations in ratio and correlation of solar magnetic fields in the Fe I 525.02 nm and Na I 589.59 nm lines according to Mount Wilson measurements during 2000–2012},
journal={Solnechno-Zemnaya Fizika},
publisher={INFRA-M Academic Publishing LLC.},
year={2018},
pages={11-34},
volume={4},
issue={2},
}