Submitted on: 08 March 1999.
Revised on: 02 April 1999.
Accepted on: 20 April 1999.
Quantum Information Processing
Submitted on: 18 February 1999.
Revised on: 20 March 1999.
Accepted on: 01 April 1999.
Quantum Information Processing
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Submitted on: 31 January 2011.
Revised on: 18 February 2011.
Accepted on: 03 March 2011.
Quantum Information Processing
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Submitted on: 22 April 2012.
Revised on: 12 May 2012.
Accepted on: 21 May 2012.
Quantum Information Processing
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