%0 Journal Article %T Influence of the β solar wind parameter on statistical characteristics of the Ap index in the solar activity cycle %A Zotov, O.D. %A Klain, B.I. %A Kurazhkovskaya, N.A. %K ULF wave propagation, numerical simulation, ionosphere %J Solnechno-Zemnaya Fizika %D 2019 %N 5 %P 8 %I INFRA-M Academic Publishing LLC.