TY  - BOOK
AU  - Moser, Petra
AU  - Ohmstedt, Joerg 
AU  - Rhode, Paul W
ED  - National Bureau of Economic Research
TI  - Patent citations and the size of the inventive step: Evidence from hybrid corn 
T2  - NBER Working Paper
PY  - 2015///
CY  - Cambridge
PB  - NBER
KW  - NBERWP 21443
KW  - E15249.pdf
UR  - http://elibrary.igidr.ac.in/e-library/working papers/NBER/2015/E15249.pdf
ER  -