TY -
GEN
AU - Williams, Heidi L.
AU - National Bureau of Economic Research
TI -
How Do Patents Affect Research Investments?
PB - National Bureau of Economic Research
PY - January 2017
BT - NBER working paper series ; no. w23088
CY - Cambridge, Mass
UR - http://slubdd.de/katalog?TN_libero_mab2
ER -