TY JOUR TI Hysteresis cycles and invariance of the Dst index form during geomagnetic storm development KW geomagnetic storms KW solar wind KW heliospheric parameters KW Dst index KW hysteresis KW invariance JO Solnechno-Zemnaya Fizika AU Kurazhkovskaya, N.A. AU Klain, B.I. AU Zotov, O.D. AU Kurazhkovskii, A.Y. PY 2025 IS 11 PB INFRA-M Academic Publishing LLC.