Andjelka B. Kovačević, Aleksandra Nina, Luka Č. Popović, Milan Radovanović, “Two-Dimensional Correlation Analysis of Periodicity in Noisy Series: Case of VLF Signal Amplitude Variations in the Time Vicinity of an Earthquake”, Mathematics, 10, № 22, 2022, 4278
P. Biagi, A. Ermini, G. Nico, 2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science, 2020, 1
Aleksandra Nina, “Analysis of VLF Signal Noise Changes in the Time Domain and Excitations/Attenuations of Short-Period Waves in the Frequency Domain as Potential Earthquake Precursors”, Remote Sensing, 16, № 2, 2024, 397
Mohammed Y. Boudjada, Pier F. Biagi, Hans U. Eichelberger, Giovanni Nico, Konrad Schwingenschuh, Patrick H. M. Galopeau, Maria Solovieva, Michael Contadakis, Valery Denisenko, Helmut Lammer, Wolfgang Voller, Franz Giner, “Unusual Sunrise and Sunset Terminator Variations in the Behavior of Sub-Ionospheric VLF Phase and Amplitude Signals Prior to the Mw7.8 Turkey Syria Earthquake of 6 February 2023”, Remote Sensing, 16, № 23, 2024, 4448