Ian Main
	Robert Geller Max Wyss Pascal Bernard
	Andrew Michael Christopher Scholz
	Leon Knopoff Robert Geller Max Wyss Pascal Bernard E-mail contributions:  Per Bak
	David Jackson Robert Geller David Jackson E-mail contributions:   David Bowman    & Charles Sammis   Francesco Biagi
	Andrew Michael Robert Geller Max Wyss E-mail contributions:   Stuart Crampin   Zhongliang Wu
	Christopher Scholz Robert Geller Max Wyss
	E-mail contributions:   Didier Sornette Ian Main