http://reply.papertrans.cn/1/44/4395/4395-11.png
Submitted on: 09 August 2016.
Revised on: 28 November 2016.
Accepted on: 07 January 2017.
___________________Bulletin of the University of Karaganda-Physics
Submitted on: 20 August 2002.
Revised on: 18 November 2002.
Accepted on: 16 December 2002.
___________________Bulletin of the University of Karaganda-Physics
Submitted on: 05 September 2022.
Revised on: 11 October 2022.
Accepted on: 16 November 2022.
___________________Bulletin of the University of Karaganda-Physics
Submitted on: 30 September 2021.
Revised on: 16 January 2022.
Accepted on: 17 February 2022.
___________________Bulletin of the University of Karaganda-Physics
Submitted on: 20 February 2021.
Revised on: 20 June 2021.
Accepted on: 25 July 2021.
___________________Bulletin of the University of Karaganda-Physics
Submitted on: 13 April 2011.
Revised on: 19 July 2011.
Accepted on: 10 September 2011.
___________________Bulletin of the University of Karaganda-Physics
http://reply.papertrans.cn/1/44/4395/4395-18.png
http://reply.papertrans.cn/1/44/4395/4395-19.png
Submitted on: 14 September 2000.
Revised on: 22 November 2000.
Accepted on: 23 December 2000.
___________________Bulletin of the University of Karaganda-Physics