Lightning Sferics: Analysis of the Instantaneous Phase and Frequency Inferred From Complex Waveforms

Liu, Z., Koh, K.L., Mezentsev, A., Enno, S.-E., Sugier, J., Fullekrug, M., (2018) Lightning Sferics: Analysis of the Instantaneous Phase and Frequency Inferred From Complex Waveforms, Radio Science, doi.org/10.1002/2017RS006451 (pdf)