Submitted on: 31 January 1999.
Revised on: 13 February 1999.
Accepted on: 07 March 1999.
Physical Communication
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Submitted on: 11 February 2004.
Revised on: 10 March 2004.
Accepted on: 05 April 2004.
Physical Communication---ELSEVIER
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Submitted on: 08 June 2001.
Revised on: 25 June 2001.
Accepted on: 01 July 2001.
Physical Communication
Submitted on: 16 December 2021.
Revised on: 02 January 2022.
Accepted on: 09 January 2022.
Physical Communication---ELSEVIER