Submitted on: 14 September 1998.
Revised on: 30 October 1998.
Accepted on: 17 November 1998.
___________________Cinta de Moebio---UNIV CHILE, FAC CIENCIAS SOCIALES
http://reply.papertrans.cn/1/55/5417/5417-32.png
Submitted on: 19 October 2011.
Revised on: 09 December 2011.
Accepted on: 07 January 2012.
___________________Cinta de Moebio---UNIV CHILE, FAC CIENCIAS SOCIALES
Submitted on: 17 March 2023.
Revised on: 28 April 2023.
Accepted on: 25 June 2023.
___________________Cinta de Moebio---UNIV CHILE, FAC CIENCIAS SOCIALES
Submitted on: 10 May 2020.
Revised on: 15 June 2020.
Accepted on: 04 August 2020.
___________________Cinta de Moebio---UNIV CHILE, FAC CIENCIAS SOCIALES
Submitted on: 23 June 2024.
Revised on: 28 July 2024.
Accepted on: 10 August 2024.
___________________Cinta de Moebio---UNIV CHILE, FAC CIENCIAS SOCIALES