Innovation and Productivity in SMEs - Empirical Evidence for Italy

Sample Selection Bias as a Specification Error

James J. Heckman · Econometrica · 1979 · 28.4K citations

Econometric Model, Economics, Bias Detection +13

Innovation and Learning: The Two Faces of R & D

Wesley M. Cohen, Daniel A. Levinthal · The Economic Journal · 1989 · 7.5K citations

Journal Article Innovation, Education, Innovation Management +17

Innovation and small firms

Choice Reviews Online · 1991 · 1.6K citations

Entrepreneurship, Innovation Management, Economic Growth +18

Tobit models: A survey

Takeshi Amemiya · Journal of Econometrics · 1984 · 1.5K citations

Tobit Regression, Computer Science, Tobit Models +1

A Reprise of Size and R & D

Wesley M. Cohen, Steven Klepper · The Economic Journal · 1996 · 1.2K citations

Applied Econometrics, Endogenous Growth Theory, Heterodox Economics +21