http://reply.papertrans.cn/3/277/27694/27694-31.png
http://reply.papertrans.cn/3/277/27694/27694-32.png
http://reply.papertrans.cn/3/277/27694/27694-33.png
Submitted on: 08 January 2001.
Revised on: 21 February 2001.
Accepted on: 01 March 2001.
SCIENTOMETRICS---SPRINGER
http://reply.papertrans.cn/3/277/27694/27694-35.png
Submitted on: 14 November 2022.
Revised on: 27 November 2022.
Accepted on: 21 December 2022.
SCIENTOMETRICS---SPRINGER