http://reply.papertrans.cn/1/64/6346/6346-21.png
http://reply.papertrans.cn/1/64/6346/6346-22.png
Submitted on: 06 January 2002.
Revised on: 19 February 2002.
Accepted on: 16 March 2002.
___________________Configurations---JOHNS HOPKINS UNIV PRESS
Submitted on: 19 July 2000.
Revised on: 06 October 2000.
Accepted on: 29 October 2000.
___________________Configurations---JOHNS HOPKINS UNIV PRESS
Submitted on: 23 March 2004.
Revised on: 15 July 2004.
Accepted on: 04 August 2004.
___________________Configurations---JOHNS HOPKINS UNIV PRESS
Submitted on: 18 October 2008.
Revised on: 26 January 2009.
Accepted on: 22 March 2009.
___________________Configurations---JOHNS HOPKINS UNIV PRESS
http://reply.papertrans.cn/1/64/6346/6346-27.png
http://reply.papertrans.cn/1/64/6346/6346-28.png
Submitted on: 21 October 2008.
Revised on: 29 December 2008.
Accepted on: 14 January 2009.
___________________Configurations---JOHNS HOPKINS UNIV PRESS
Submitted on: 01 May 2003.
Revised on: 23 June 2003.
Accepted on: 18 August 2003.
___________________Configurations---JOHNS HOPKINS UNIV PRESS