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Computing Productivity: Firm-Level Evidence[J] . Erik Brynjolfsson,Lorin M. Hitt.Review of Economics and Statistics . 2003 (4)
[2]
Performance Impacts of Information Technology: Is Actual Usage the Missing Link?[J] . Sarv Devaraj,Rajiv Kohli.Management Science . 2003 (3)
[4]
Information Technology and Internal Firm Organization: An Exploratory Analysis[J] . Lorin M. Hitt,Erik Brynjolfsson.Journal of Management Information Systems . 1997 (2)