Submitted on: 06 March 2011.
Revised on: 25 March 2011.
Accepted on: 31 March 2011.
NEW JOURNAL OF PHYSICS---IOP PUBLISHING LTD
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Submitted on: 26 July 2012.
Revised on: 03 September 2012.
Accepted on: 21 September 2012.
NEW JOURNAL OF PHYSICS
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Submitted on: 24 September 2000.
Revised on: 03 November 2000.
Accepted on: 24 November 2000.
NEW JOURNAL OF PHYSICS---IOP PUBLISHING LTD
Submitted on: 17 March 2012.
Revised on: 27 March 2012.
Accepted on: 18 April 2012.
NEW JOURNAL OF PHYSICS
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Submitted on: 30 November 2015.
Revised on: 13 January 2016.
Accepted on: 20 January 2016.
NEW JOURNAL OF PHYSICS---IOP PUBLISHING LTD