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Submitted on: 25 September 1998.
Revised on: 30 October 1998.
Accepted on: 28 December 1998.
___________________JOURNAL OF PRODUCT INNOVATION MANAGEMENT
Submitted on: 16 August 2021.
Revised on: 11 October 2021.
Accepted on: 09 November 2021.
___________________JOURNAL OF PRODUCT INNOVATION MANAGEMENT