http://reply.papertrans.cn/3/235/23493/23493-11.png
http://reply.papertrans.cn/3/235/23493/23493-12.png
Submitted on: 14 August 2011.
Revised on: 08 September 2011.
Accepted on: 05 October 2011.
OBETS-Revista de Ciencias Sociales
Submitted on: 05 June 2010.
Revised on: 20 June 2010.
Accepted on: 17 July 2010.
OBETS-Revista de Ciencias Sociales
Submitted on: 21 February 2016.
Revised on: 10 March 2016.
Accepted on: 01 April 2016.
OBETS-Revista de Ciencias Sociales
http://reply.papertrans.cn/3/235/23493/23493-16.png
Submitted on: 26 December 2002.
Revised on: 20 January 2003.
Accepted on: 11 February 2003.
OBETS-Revista de Ciencias Sociales
http://reply.papertrans.cn/3/235/23493/23493-18.png
Submitted on: 20 June 2010.
Revised on: 03 August 2010.
Accepted on: 15 August 2010.
OBETS-Revista de Ciencias Sociales
Submitted on: 13 July 2015.
Revised on: 21 July 2015.
Accepted on: 04 August 2015.
OBETS-Revista de Ciencias Sociales