Submitted on: 09 February 2001.
Revised on: 09 April 2001.
Accepted on: 03 June 2001.
___________________DOWN BEAT---MAHER PUBL INC
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http://reply.papertrans.cn/1/77/7628/7628-33.png
Submitted on: 20 March 2013.
Revised on: 06 June 2013.
Accepted on: 02 July 2013.
___________________DOWN BEAT---MAHER PUBL INC
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