1. Link, A.N. Basic research and productivity increase in manufacturing: Additional evidence. Am. Econ. Rev. 1981, 71(12) 1111–1112.
2. Griliches, Z. Productivity, R&D and basic research at the firm level in the 1970’s. Am. Econ. Rev. 1986, 76, 141–154.
3. Krogh, L.C. Measuring and improving laboratory productivity/quality. Res. Manage. 1987, November–December, 22–24.
4. For example, Ellis, L.W., Curtis, C.C. ‘Speedy R&D: How beneficial? Res.-Technol. Manage. 1995, July–August, 42–51.
5. Grove, A.S., Only the Paranoid Survive: How to Exploit the Crisis Points That Challenge Every Company, 1999, New York: Bantam Books