http://reply.papertrans.cn/3/287/28632/28632-31.png
http://reply.papertrans.cn/3/287/28632/28632-32.png
Submitted on: 25 February 2012.
Revised on: 04 March 2012.
Accepted on: 27 March 2012.
Statistics & Risk Modeling
http://reply.papertrans.cn/3/287/28632/28632-34.png
http://reply.papertrans.cn/3/287/28632/28632-35.png
Submitted on: 17 July 2022.
Revised on: 13 August 2022.
Accepted on: 23 August 2022.
Statistics & Risk Modeling---WALTER DE GRUYTER GMBH