Fursyak, Yurii. 2024. “Transverse Component of the Longitudinal Magnetic Field Gradient in Active Regions With Different Levels of Flare Productivity: Different Approaches to Calculation, Dynamics and Probable Critical Values”. Acta Astrophysica Taurica 5 (1):11-20. https://doi.org/10.34898/aat.vol5.iss1.pp11-20.