Submitted on: 08 April 1999.
Revised on: 22 July 1999.
Accepted on: 22 August 1999.
___________________Earthquake Science---KEAI PUBLISHING LTD
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Submitted on: 11 March 2014.
Revised on: 23 June 2014.
Accepted on: 26 July 2014.
___________________Earthquake Science---KEAI PUBLISHING LTD
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Submitted on: 16 July 2009.
Revised on: 10 October 2009.
Accepted on: 28 November 2009.
___________________Earthquake Science---KEAI PUBLISHING LTD
Submitted on: 07 October 2001.
Revised on: 30 November 2001.
Accepted on: 19 December 2001.
___________________Earthquake Science---KEAI PUBLISHING LTD
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Submitted on: 19 May 2000.
Revised on: 10 July 2000.
Accepted on: 02 August 2000.
___________________Earthquake Science---KEAI PUBLISHING LTD