Mikhailov, Y. M., G. A. Mikhailova, O. V. Kapustina, A. V. Buzevich, and S. E. Smirnov. 2004. “Power Spectrum Features of the Near-Earth Atmospheric Electric Field in Kamchatka”. Annals of Geophysics 47 (1). https://doi.org/10.4401/ag-3275.