Porter, M. E., & Stern, S. (2000). Measuring the "ideas" production function: Evidence from international patent output. National Bureau of Economic Research.
Chicago-Zitierstil (17. Ausg.)Porter, Michael E., und Scott Stern. Measuring the "Ideas" Production Function: Evidence from International Patent Output. Cambridge, Mass: National Bureau of Economic Research, 2000.
MLA-Zitierstil (9. Ausg.)Porter, Michael E., und Scott Stern. Measuring the "Ideas" Production Function: Evidence from International Patent Output. National Bureau of Economic Research, 2000.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.