%0 Journal Article %T Regression Derivatives and Their Application in the Study of Magnetic Storms %A Agayan, S.M. %A Bogoutdinov, S.R. %A Sidorov, R.V. %A Soloviev, A.A. %A Kamaev, D.A. %A Aleksanyan, A.O. %A Dzeranov, B.V. %K Proximity measure, regression derivation, regression smoothing, measures of activity. multi-scale measures of activitys %J Russian Journal of Earth Sciences %D 2023 %N 23 %P 21 %I Geophysical Center of the Russian Academy of Sciences