Submitted on: 02 January 2005.
Revised on: 05 April 2005.
Accepted on: 05 May 2005.
___________________BULLETIN OF MATHEMATICAL BIOLOGY
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Submitted on: 28 November 2005.
Revised on: 21 March 2006.
Accepted on: 19 May 2006.
___________________BULLETIN OF MATHEMATICAL BIOLOGY
Submitted on: 22 September 2020.
Revised on: 26 October 2020.
Accepted on: 25 December 2020.
___________________BULLETIN OF MATHEMATICAL BIOLOGY
Submitted on: 23 September 2010.
Revised on: 28 November 2010.
Accepted on: 13 December 2010.
___________________BULLETIN OF MATHEMATICAL BIOLOGY
Submitted on: 28 January 2001.
Revised on: 08 May 2001.
Accepted on: 29 May 2001.
___________________BULLETIN OF MATHEMATICAL BIOLOGY
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Submitted on: 26 April 2018.
Revised on: 21 May 2018.
Accepted on: 12 July 2018.
___________________BULLETIN OF MATHEMATICAL BIOLOGY
Submitted on: 23 December 2001.
Revised on: 10 March 2002.
Accepted on: 04 May 2002.
___________________BULLETIN OF MATHEMATICAL BIOLOGY