Submitted on: 28 August 2001.
Revised on: 17 December 2001.
Accepted on: 09 February 2002.
___________________Journal of the Association for Information Science and Technology
Submitted on: 20 May 1998.
Revised on: 07 July 1998.
Accepted on: 14 August 1998.
___________________Journal of the Association for Information Science and Technology
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http://reply.papertrans.cn/2/197/19642/19642-15.png
Submitted on: 13 September 2011.
Revised on: 09 January 2012.
Accepted on: 22 January 2012.
___________________Journal of the Association for Information Science and Technology
Submitted on: 20 May 2014.
Revised on: 24 June 2014.
Accepted on: 12 August 2014.
___________________Journal of the Association for Information Science and Technology
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Submitted on: 10 June 2002.
Revised on: 17 July 2002.
Accepted on: 14 September 2002.
___________________Journal of the Association for Information Science and Technology