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Submitted on: 13 January 2002.
Revised on: 20 March 2002.
Accepted on: 12 April 2002.
___________________JOHNS HOPKINS APL TECHNICAL DIGEST
Submitted on: 01 March 2007.
Revised on: 23 March 2007.
Accepted on: 13 May 2007.
___________________JOHNS HOPKINS APL TECHNICAL DIGEST
Submitted on: 16 December 2013.
Revised on: 13 March 2014.
Accepted on: 29 April 2014.
___________________JOHNS HOPKINS APL TECHNICAL DIGEST
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