KOČI, E. and VALACH, F. (2025) “A sign of the dayside current wedge in geomagnetic observations at Stará Ďala (present-day Hurbanovo) on 16 April 1938”, Contributions to Geophysics and Geodesy, 55(3), pp. 297–311. doi:10.31577/congeo.2025.55.3.2.