http://reply.papertrans.cn/3/239/23870/23870-21.png
Submitted on: 08 January 2013.
Revised on: 18 February 2013.
Accepted on: 10 March 2013.
OSTRICH---TAYLOR & FRANCIS LTD
http://reply.papertrans.cn/3/239/23870/23870-23.png
http://reply.papertrans.cn/3/239/23870/23870-24.png
http://reply.papertrans.cn/3/239/23870/23870-25.png
http://reply.papertrans.cn/3/239/23870/23870-26.png
http://reply.papertrans.cn/3/239/23870/23870-27.png
Submitted on: 23 September 2001.
Revised on: 31 October 2001.
Accepted on: 27 November 2001.
OSTRICH
http://reply.papertrans.cn/3/239/23870/23870-29.png
http://reply.papertrans.cn/3/239/23870/23870-30.png