SUMARUK, Y.; REDA, J. Formation, development and the current state of geomagnetic observatories of Ukraine. Geofizicheskiy Zhurnal, [S. l.], v. 47, n. 2, 2025. DOI: 10.24028/gj.v47i2.322572. Disponível em: https://journals.uran.ua/geofizicheskiy/article/view/322572. Acesso em: 5 dec. 2025.