Submitted on: 26 April 2022.
Revised on: 07 June 2022.
Accepted on: 29 June 2022.
MATHEMATICAL MODELS & METHODS IN APPLIED SCIENCES
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Submitted on: 17 December 2001.
Revised on: 09 January 2002.
Accepted on: 28 January 2002.
MATHEMATICAL MODELS & METHODS IN APPLIED SCIENCES
Submitted on: 19 April 2012.
Revised on: 19 May 2012.
Accepted on: 31 May 2012.
MATHEMATICAL MODELS & METHODS IN APPLIED SCIENCES
Submitted on: 29 July 2007.
Revised on: 21 August 2007.
Accepted on: 13 September 2007.
MATHEMATICAL MODELS & METHODS IN APPLIED SCIENCES
Submitted on: 16 January 2000.
Revised on: 16 February 2000.
Accepted on: 25 February 2000.
MATHEMATICAL MODELS & METHODS IN APPLIED SCIENCES