"law of decay for aftershocks" . . "known laws" . "Aftershock" . . "Aftershocks" . "aftershock#Omori's Law" . "aftershock" . "Omori law" . "Omori's law" . "aftershocks" . . . "Aftershock#B\u00E5th's_law" . "Aftershock" . "Aftershock#Omori's Law" .