http://reply.papertrans.cn/2/148/14752/14752-31.png
http://reply.papertrans.cn/2/148/14752/14752-32.png
http://reply.papertrans.cn/2/148/14752/14752-33.png
Submitted on: 08 February 2004.
Revised on: 20 March 2004.
Accepted on: 19 April 2004.
___________________IUCrJ---INT UNION CRYSTALLOGRAPHY
http://reply.papertrans.cn/2/148/14752/14752-35.png
Submitted on: 10 September 2000.
Revised on: 21 December 2000.
Accepted on: 26 January 2001.
___________________IUCrJ---INT UNION CRYSTALLOGRAPHY