1. 141(31)** 1,137(29)** 1,122(29)** 1,127(29)** 1,131(30)** 982(29)** Robust standard errors in parentheses. ** p<0.01, * p<0.05, + p<0.1. Source: As for Table 1. Legend: For explanations of independent variables see Table 2. References Alvarez;R Benavente;International Journal of Technological Learning, Innovation and Development,2010
2. The economics of path-dependence in industrial organization;C Antonelli;International Journal of Industrial Organization,1997
3. The technological capabilities of nations: a review of the synthetic indicators;D Archibugi;Technological Forecasting and Social Change,2009