Submitted on: 10 October 1999.
Revised on: 28 October 1999.
Accepted on: 19 November 1999.
Structures
http://reply.papertrans.cn/3/288/28784/28784-12.png
http://reply.papertrans.cn/3/288/28784/28784-13.png
http://reply.papertrans.cn/3/288/28784/28784-14.png
Submitted on: 31 July 2010.
Revised on: 25 August 2010.
Accepted on: 05 September 2010.
Structures---ELSEVIER SCIENCE INC
http://reply.papertrans.cn/3/288/28784/28784-16.png
Submitted on: 18 April 2018.
Revised on: 04 May 2018.
Accepted on: 10 May 2018.
Structures---ELSEVIER SCIENCE INC
http://reply.papertrans.cn/3/288/28784/28784-18.png
http://reply.papertrans.cn/3/288/28784/28784-19.png
Submitted on: 16 September 2018.
Revised on: 27 September 2018.
Accepted on: 12 October 2018.
Structures---ELSEVIER SCIENCE INC