TY  - BOOK
AU  - Erkal, Nisvan
AU  - Scotchmer Suzanne
AU  - National Bureau Of Economic Research
TI  - Scarcity of ideas and R&D options: Use it, lose it or bank i
PY  - 2009///
CY  - Cambridge
PB  - NBER
UR  - http://elibrary.igidr.ac.in/e-library/working papers/NBER/2009/E652.pdf
ER  -