%0 Journal Article %T Hysteresis effect between geomagnetic activity indices (Ap, Dst) and interplanetary medium parameters in solar activity cycles 21–24 %A Kurazhkovskaya, N.A. %A Kurazhkovskii, A.Y. %K geomagnetic activity, solar wind, solar activity cycles, heliospheric parameters, hysteresis %J Solnechno-Zemnaya Fizika %D 2023 %N 9 %P 9 %I INFRA-M Academic Publishing LLC.