(1)
Pavlov, A. V.; Pavlova, N. M. Long-Term Monthly Statistics of the Mid-Latitude Ionospheric E-Layer Peak Electron Density in the Northern Geographic Hemisphere During Geomagnetically Quiet and Steadily Low Solar Activity Conditions. Ann. Geophys. 2017, 60 (3), A0327. https://doi.org/10.4401/ag-6969.