Potirakis, S. M., Eftaxias, K., Schekotov, A., Yamaguchi, H. and Hayakawa, M. (2016) “Criticality features in ultra-low frequency magnetic fields prior to the 2013 M6.3 Kobe earthquake”, Annals of Geophysics, 59(3), p. S0317. doi: 10.4401/ag-6863.