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Submitted on: 29 November 2003.
Revised on: 11 February 2004.
Accepted on: 10 March 2004.
___________________IETE JOURNAL OF RESEARCH---TAYLOR & FRANCIS LTD
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Submitted on: 22 June 2008.
Revised on: 01 October 2008.
Accepted on: 14 October 2008.
___________________IETE JOURNAL OF RESEARCH---TAYLOR & FRANCIS LTD
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http://reply.papertrans.cn/2/123/12201/12201-16.png
Submitted on: 30 May 2020.
Revised on: 25 August 2020.
Accepted on: 10 October 2020.
___________________IETE JOURNAL OF RESEARCH---TAYLOR & FRANCIS LTD
Submitted on: 12 September 2001.
Revised on: 23 October 2001.
Accepted on: 04 November 2001.
___________________IETE JOURNAL OF RESEARCH---TAYLOR & FRANCIS LTD
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Submitted on: 27 September 2003.
Revised on: 02 November 2003.
Accepted on: 12 December 2003.
___________________IETE JOURNAL OF RESEARCH---TAYLOR & FRANCIS LTD