Submitted on: 04 May 2011.
Revised on: 01 June 2011.
Accepted on: 15 June 2011.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
Submitted on: 12 April 2004.
Revised on: 22 April 2004.
Accepted on: 05 May 2004.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
Submitted on: 24 December 2007.
Revised on: 06 January 2008.
Accepted on: 20 January 2008.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
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Submitted on: 17 October 2002.
Revised on: 25 October 2002.
Accepted on: 06 November 2002.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
Submitted on: 28 March 2001.
Revised on: 21 April 2001.
Accepted on: 07 May 2001.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
Submitted on: 23 January 2023.
Revised on: 04 March 2023.
Accepted on: 18 March 2023.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
Submitted on: 15 December 1999.
Revised on: 29 December 1999.
Accepted on: 23 January 2000.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
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