References

Patents as a measure of innovative activity

10.1111/j.1467-6435.1989.tb00186.x · 1989 · External reference

10.1016/s0048-7333(98)00033-x · Admitted local publication

Unresolved reference

External reference

Unresolved reference

External reference

Unresolved reference

External reference

Patent statistics as economic indicators: a survey

1990 · External reference

Measuring R&D in small firms: How much are we missing?

10.2307/2098417 · 1987 · External reference

10.1007/978-1-349-22892-8_7

10.1007/978-1-349-22892-8_7 · External reference

10.1007/978-1-349-13917-0

10.1007/978-1-349-13917-0 · External reference

Appropriating the returns from industrial research and development

10.2307/2534454 · 1987 · External reference

Patents and innovation: an empirical study

10.1287/mnsc.32.2.173 · 1986 · External reference

Imitation costs and patents: an empirical study

10.2307/2232499 · 1981 · External reference

Specification and testing of some modified count data models

10.1016/0304-4076(86)90002-3 · 1986 · External reference

Sectoral patterns of technological change. Towards a taxonomy and a theory

10.1016/0048-7333(84)90018-0 · 1984 · External reference

The international distribution and determinants of technological activities

10.1093/oxrep/4.4.35 · 1988 · External reference

Unresolved reference

External reference

The propensity to patent

10.1016/0167-7187(83)90026-7 · 1983 · External reference