Porter, M. E., & Stern, S. (2000). Measuring the "ideas" production function: Evidence from international patent output. National Bureau of Economic Research.
Chicago Style (17th ed.) CitationPorter, Michael E., and Scott Stern. Measuring the "Ideas" Production Function: Evidence from International Patent Output. Cambridge: National Bureau of Economic Research, 2000.
MLA (9th ed.) CitationPorter, Michael E., and Scott Stern. Measuring the "Ideas" Production Function: Evidence from International Patent Output. National Bureau of Economic Research, 2000.
Warning: These citations may not always be 100% accurate.