Submitted on: 16 February 2015.
Revised on: 24 February 2015.
Accepted on: 02 March 2015.
NULL
Submitted on: 04 July 2006.
Revised on: 24 July 2006.
Accepted on: 13 August 2006.
Scientific Annals of Economics and Business
Submitted on: 07 February 2003.
Revised on: 05 March 2003.
Accepted on: 11 March 2003.
NULL
Submitted on: 23 February 2023.
Revised on: 09 March 2023.
Accepted on: 19 March 2023.
NULL
http://reply.papertrans.cn/3/277/27672/27672-15.png
Submitted on: 15 October 2023.
Revised on: 24 October 2023.
Accepted on: 10 November 2023.
NULL
http://reply.papertrans.cn/3/277/27672/27672-17.png
http://reply.papertrans.cn/3/277/27672/27672-18.png
Submitted on: 10 July 2015.
Revised on: 01 August 2015.
Accepted on: 16 August 2015.
NULL
http://reply.papertrans.cn/3/277/27672/27672-20.png