APA
Kortum S., Lerner Josh & National Bureau Of Economic Research. (1997). Stronger protection or technological revolution: What is behind the recent surge in patenting?. Cambridge, MA: NBER.
Chicago
Kortum Samuel, Lerner Josh and National Bureau Of Economic Research. 1997. Stronger protection or technological revolution: What is behind the recent surge in patenting?. Cambridge, MA: NBER.
Harvard
Kortum S., Lerner Josh and National Bureau Of Economic Research. (1997). Stronger protection or technological revolution: What is behind the recent surge in patenting?. Cambridge, MA: NBER.
MLA
Kortum Samuel, Lerner Josh and National Bureau Of Economic Research. Stronger protection or technological revolution: What is behind the recent surge in patenting?. Cambridge, MA: NBER. 1997.
TextSeries: Working Paper SeriesPublication details: Cambridge, MA NBER 1997Description: 57 + figsISBN: 
Working Papers (Print)
