Submitted on: 25 April 2018.
Revised on: 16 July 2018.
Accepted on: 23 August 2018.
___________________International Journal of Engineering Business Management
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Submitted on: 14 January 1999.
Revised on: 13 March 1999.
Accepted on: 10 May 1999.
___________________International Journal of Engineering Business Management
Submitted on: 22 December 1999.
Revised on: 25 March 2000.
Accepted on: 23 April 2000.
___________________International Journal of Engineering Business Management