Potirakis, Stelios M., Konstantinos Eftaxias, Alexander Schekotov, Hiroki Yamaguchi, and Masashi Hayakawa. “Criticality Features in Ultra-Low Frequency Magnetic Fields Prior to the 2013 M6.3 Kobe Earthquake”. Annals of Geophysics 59, no. 3 (July 12, 2016): S0317. Accessed September 27, 2022. https://www.annalsofgeophysics.eu/index.php/annals/article/view/6863.