Submitted on: 17 May 2018.
Revised on: 31 May 2018.
Accepted on: 18 June 2018.
PUBLIC CHOICE
Submitted on: 10 October 2019.
Revised on: 16 November 2019.
Accepted on: 01 December 2019.
PUBLIC CHOICE---SPRINGER
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http://reply.papertrans.cn/3/258/25762/25762-14.png
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http://reply.papertrans.cn/3/258/25762/25762-16.png
Submitted on: 22 September 1998.
Revised on: 12 October 1998.
Accepted on: 30 October 1998.
PUBLIC CHOICE---SPRINGER
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Submitted on: 29 August 2010.
Revised on: 11 October 2010.
Accepted on: 17 October 2010.
PUBLIC CHOICE
Submitted on: 17 June 2023.
Revised on: 30 July 2023.
Accepted on: 06 August 2023.
PUBLIC CHOICE---SPRINGER