Submitted on: 21 February 2019.
Revised on: 01 May 2019.
Accepted on: 25 June 2019.
___________________JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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Submitted on: 20 March 2006.
Revised on: 06 July 2006.
Accepted on: 26 August 2006.
___________________JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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Submitted on: 10 June 1998.
Revised on: 11 July 1998.
Accepted on: 05 August 1998.
___________________JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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Submitted on: 06 January 1999.
Revised on: 27 January 1999.
Accepted on: 23 February 1999.
___________________JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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Submitted on: 25 May 2011.
Revised on: 06 September 2011.
Accepted on: 09 October 2011.
___________________JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS