Patents {Ecdat} | R Documentation |
a cross-section from 1990–1991
number of observations : 181
observation : production units
country : world
data(Patents)
A dataframe containing :
Cincera, M. (1997) “Patents, R&D, and technological spillovers at the firm level : some evidence from econometric count models for panel data”, Journal of Applied Econometrics , 12, 265–280.
Verbeek, Marno (2004) A guide to modern econometrics, John Wiley and Sons, http://www.econ.kuleuven.ac.be/GME, chapter 7.
Index.Books
, Index.Economics
, Index.Econometrics
, Index.Observations