Submitted on: 17 January 2000.
Revised on: 12 April 2000.
Accepted on: 05 May 2000.
___________________Applied System Innovation---MDPI
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Submitted on: 14 January 1999.
Revised on: 19 February 1999.
Accepted on: 05 March 1999.
___________________Applied System Innovation---MDPI
Submitted on: 06 August 2023.
Revised on: 05 October 2023.
Accepted on: 24 October 2023.
___________________Applied System Innovation---MDPI
Submitted on: 24 July 2020.
Revised on: 27 September 2020.
Accepted on: 19 October 2020.
___________________Applied System Innovation---MDPI
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Submitted on: 04 October 2018.
Revised on: 01 December 2018.
Accepted on: 24 January 2019.
___________________Applied System Innovation---MDPI
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Submitted on: 07 December 2017.
Revised on: 22 March 2018.
Accepted on: 07 May 2018.
___________________Applied System Innovation---MDPI
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