TY -
GEN
AU - Hopenhayn, Hugo A.
AU - National Bureau of Economic Research
AU - Mitchell, Matthew F.
TI -
Innovation Fertility and Patent Design
PB - National Bureau of Economic Research
PY - April 1999
BT - NBER working paper series ; no. w7070
CY - Cambridge, Mass
UR - http://slubdd.de/katalog?TN_libero_mab2
ER -