Submitted on: 07 March 1998.
Revised on: 25 April 1998.
Accepted on: 21 May 1998.
___________________Elektronika Ir Elektrotechnika
http://reply.papertrans.cn/1/83/8245/8245-12.png
http://reply.papertrans.cn/1/83/8245/8245-13.png
Submitted on: 26 March 2021.
Revised on: 22 May 2021.
Accepted on: 21 June 2021.
___________________Elektronika Ir Elektrotechnika
http://reply.papertrans.cn/1/83/8245/8245-15.png
Submitted on: 16 August 2005.
Revised on: 26 October 2005.
Accepted on: 18 November 2005.
___________________Elektronika Ir Elektrotechnika
http://reply.papertrans.cn/1/83/8245/8245-17.png
Submitted on: 24 January 2024.
Revised on: 22 March 2024.
Accepted on: 06 April 2024.
___________________Elektronika Ir Elektrotechnika
http://reply.papertrans.cn/1/83/8245/8245-19.png
Submitted on: 27 February 2009.
Revised on: 12 April 2009.
Accepted on: 03 May 2009.
___________________Elektronika Ir Elektrotechnika