1[1]Dale W.Jorgenson, Information Technology and the U.S. Economy, Dec, 13, 2000.
2[2]Erik Brynjolfsson, Information Technoloy and Productivity: A Review of the Literature, MIT Sloan School o f M a nagement Co mbridge, Massachusetts.
3[3]Mark C. Anderson, Rajiv D. Banker, Sury Ravindran, Value Implications of Relative Investments in Information Technology, School of Management the University of Texas at Dallas, Nov, 6, 2000.
4[4]Jack E. Trilett, "High-Tech Industry Productivity and Hedonic Prices Indices", Bureau of Economic Analysis U.S. Department of Commerce.
