Submitted on: 20 March 2000.
Revised on: 12 April 2000.
Accepted on: 18 April 2000.
SOCIAL ALTERNATIVES---SOCIAL ALTERNATIVES
Submitted on: 06 October 2009.
Revised on: 18 October 2009.
Accepted on: 14 November 2009.
SOCIAL ALTERNATIVES
Submitted on: 07 January 2004.
Revised on: 07 February 2004.
Accepted on: 02 March 2004.
SOCIAL ALTERNATIVES
http://reply.papertrans.cn/3/282/28102/28102-34.png
Submitted on: 09 March 2011.
Revised on: 27 March 2011.
Accepted on: 24 April 2011.
SOCIAL ALTERNATIVES
http://reply.papertrans.cn/3/282/28102/28102-36.png