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Submitted on: 15 May 2011.
Revised on: 24 May 2011.
Accepted on: 06 June 2011.
REPORTS ON MATHEMATICAL PHYSICS
Submitted on: 18 July 1998.
Revised on: 28 August 1998.
Accepted on: 06 September 1998.
REPORTS ON MATHEMATICAL PHYSICS
Submitted on: 12 April 1998.
Revised on: 24 April 1998.
Accepted on: 07 May 1998.
REPORTS ON MATHEMATICAL PHYSICS
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Submitted on: 11 August 2008.
Revised on: 03 September 2008.
Accepted on: 14 September 2008.
REPORTS ON MATHEMATICAL PHYSICS
Submitted on: 04 June 2002.
Revised on: 22 June 2002.
Accepted on: 05 July 2002.
REPORTS ON MATHEMATICAL PHYSICS
Submitted on: 07 March 1999.
Revised on: 27 March 1999.
Accepted on: 11 April 1999.
REPORTS ON MATHEMATICAL PHYSICS
Submitted on: 07 August 1999.
Revised on: 20 September 1999.
Accepted on: 08 October 1999.
REPORTS ON MATHEMATICAL PHYSICS
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