Submitted on: 03 June 1998.
Revised on: 01 September 1998.
Accepted on: 28 September 1998.
___________________International Journal of Innovation and Technology Management
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Submitted on: 14 November 2010.
Revised on: 12 January 2011.
Accepted on: 19 February 2011.
___________________International Journal of Innovation and Technology Management
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Submitted on: 30 May 2017.
Revised on: 20 August 2017.
Accepted on: 11 September 2017.
___________________International Journal of Innovation and Technology Management
Submitted on: 11 January 2000.
Revised on: 22 April 2000.
Accepted on: 13 May 2000.
___________________International Journal of Innovation and Technology Management