Submitted on: 04 June 2015.
Revised on: 30 September 2015.
Accepted on: 19 October 2015.
___________________Journal of Mathematics and the Arts
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Submitted on: 22 April 2008.
Revised on: 14 May 2008.
Accepted on: 12 June 2008.
___________________Journal of Mathematics and the Arts
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Submitted on: 25 January 2006.
Revised on: 22 May 2006.
Accepted on: 29 June 2006.
___________________Journal of Mathematics and the Arts
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