Submitted on: 24 November 2018.
Revised on: 10 February 2019.
Accepted on: 27 February 2019.
___________________Journal of Luminescence---ELSEVIER
Submitted on: 02 November 2021.
Revised on: 19 January 2022.
Accepted on: 29 January 2022.
___________________Journal of Luminescence---ELSEVIER
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Submitted on: 20 December 1998.
Revised on: 03 March 1999.
Accepted on: 26 April 1999.
___________________Journal of Luminescence---ELSEVIER
Submitted on: 21 April 2007.
Revised on: 04 July 2007.
Accepted on: 28 August 2007.
___________________Journal of Luminescence---ELSEVIER
Submitted on: 31 December 2017.
Revised on: 02 April 2018.
Accepted on: 30 April 2018.
___________________Journal of Luminescence---ELSEVIER
Submitted on: 02 September 2005.
Revised on: 23 November 2005.
Accepted on: 20 January 2006.
___________________Journal of Luminescence---ELSEVIER
Submitted on: 04 February 2015.
Revised on: 13 April 2015.
Accepted on: 18 May 2015.
___________________Journal of Luminescence---ELSEVIER
Submitted on: 10 November 2015.
Revised on: 06 January 2016.
Accepted on: 22 February 2016.
___________________Journal of Luminescence---ELSEVIER
Submitted on: 25 November 1998.
Revised on: 21 December 1998.
Accepted on: 28 January 1999.
___________________Journal of Luminescence---ELSEVIER