Submitted on: 04 March 2000.
Revised on: 08 April 2000.
Accepted on: 18 April 2000.
NULL
http://reply.papertrans.cn/3/270/26909/26909-22.png
Submitted on: 21 November 2017.
Revised on: 31 December 2017.
Accepted on: 08 January 2018.
Revista Educacion en Ingenieria
http://reply.papertrans.cn/3/270/26909/26909-24.png
Submitted on: 01 May 2010.
Revised on: 30 May 2010.
Accepted on: 15 June 2010.
Revista Educacion en Ingenieria
Submitted on: 22 March 2000.
Revised on: 30 March 2000.
Accepted on: 17 April 2000.
Revista Educacion en Ingenieria
http://reply.papertrans.cn/3/270/26909/26909-27.png
http://reply.papertrans.cn/3/270/26909/26909-28.png
Submitted on: 07 April 2011.
Revised on: 03 May 2011.
Accepted on: 28 May 2011.
NULL
http://reply.papertrans.cn/3/270/26909/26909-30.png