Kagan, Y. Y., 1994. Observational evidence for earthquakes as a nonlinear dynamic process, Physica D, 77, 160-192.
Fig. 1ab, PostScript file ; Fig. 1c, PostScript file ; Fig. 2, PostScript file ; Fig. 3 (color), PostScript file ; Fig. 4, PostScript file ; Fig. 5, PostScript file ; Fig. 6, PostScript file ; Fig. 7, PostScript file ; Fig. 8, PostScript file ; Fig. 9, PostScript file ; Fig. 10, PostScript file