Kopytenko, Y.; Ismagilov, V.; Hayakawa, M.; Smirnova, N.; Troyan, V.; Peterson, T. Investigation of the ULFelectromagnetic Phenomena Related Toearthquakes: Contemporary Achievementsand the Perspectives. Ann. Geophys. 2001, 44 (2). https://doi.org/10.4401/ag-3599.