Submitted on: 13 November 2007.
Revised on: 22 January 2008.
Accepted on: 12 March 2008.
___________________ELECTRICAL ENGINEERING IN JAPAN
Submitted on: 06 October 2004.
Revised on: 16 December 2004.
Accepted on: 23 January 2005.
___________________ELECTRICAL ENGINEERING IN JAPAN
Submitted on: 24 December 2006.
Revised on: 02 April 2007.
Accepted on: 19 May 2007.
___________________ELECTRICAL ENGINEERING IN JAPAN
Submitted on: 24 January 2018.
Revised on: 15 May 2018.
Accepted on: 11 July 2018.
___________________ELECTRICAL ENGINEERING IN JAPAN
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Submitted on: 16 September 2010.
Revised on: 02 January 2011.
Accepted on: 23 January 2011.
___________________ELECTRICAL ENGINEERING IN JAPAN