Sumaruk, T. and Sumaruk, P. 2020. Reflection of the solar activity Hale cycles on the geomagnetic field secular variations. Geofizicheskiy Zhurnal. 42, 5 (Nov. 2020), 183–192. DOI:https://doi.org/10.24028/gzh.0203-3100.v42i5.2020.215081.