http://reply.papertrans.cn/3/215/21478/21478-21.png
http://reply.papertrans.cn/3/215/21478/21478-22.png
Submitted on: 13 January 2011.
Revised on: 02 February 2011.
Accepted on: 07 February 2011.
MATHEMATICAL SOCIAL SCIENCES
Submitted on: 09 January 2014.
Revised on: 18 January 2014.
Accepted on: 09 February 2014.
MATHEMATICAL SOCIAL SCIENCES---ELSEVIER
Submitted on: 03 October 2004.
Revised on: 18 October 2004.
Accepted on: 01 November 2004.
MATHEMATICAL SOCIAL SCIENCES
http://reply.papertrans.cn/3/215/21478/21478-26.png
Submitted on: 02 April 2023.
Revised on: 15 May 2023.
Accepted on: 25 May 2023.
MATHEMATICAL SOCIAL SCIENCES---ELSEVIER
Submitted on: 23 February 1998.
Revised on: 18 March 1998.
Accepted on: 28 March 1998.
MATHEMATICAL SOCIAL SCIENCES
Submitted on: 28 December 2001.
Revised on: 04 February 2002.
Accepted on: 11 February 2002.
MATHEMATICAL SOCIAL SCIENCES---ELSEVIER
Submitted on: 13 September 2020.
Revised on: 06 October 2020.
Accepted on: 30 October 2020.
MATHEMATICAL SOCIAL SCIENCES---ELSEVIER