Hall, Bronwyn H; Hausman, Jerry A.; Griliches, Zvi - National Bureau of Economic Research (NBER) - 1983
This paper extends earlier work on the R&D to patents relationship (Pakes-Griliches 1980, and Hausman, Hall, and Griliches, 1984) to a larger but shorter panel of firms. Using both non-linear least squares and Poisson type models to treat the problem of discreteness in the dependent variable the...