Submitted on: 08 December 2015.
Revised on: 08 January 2016.
Accepted on: 18 January 2016.
___________________IEEE Latin America Transactions
http://reply.papertrans.cn/2/119/11833/11833-22.png
Submitted on: 22 July 2002.
Revised on: 24 October 2002.
Accepted on: 10 December 2002.
___________________IEEE Latin America Transactions
Submitted on: 18 April 2016.
Revised on: 21 July 2016.
Accepted on: 09 August 2016.
___________________IEEE Latin America Transactions
Submitted on: 28 July 2000.
Revised on: 27 September 2000.
Accepted on: 13 November 2000.
___________________IEEE Latin America Transactions
Submitted on: 10 August 2008.
Revised on: 20 November 2008.
Accepted on: 21 December 2008.
___________________IEEE Latin America Transactions
http://reply.papertrans.cn/2/119/11833/11833-27.png
Submitted on: 02 November 2015.
Revised on: 24 December 2015.
Accepted on: 15 February 2016.
___________________IEEE Latin America Transactions
Submitted on: 30 March 1999.
Revised on: 29 April 1999.
Accepted on: 21 June 1999.
___________________IEEE Latin America Transactions
http://reply.papertrans.cn/2/119/11833/11833-30.png