1. Strategies for a Technology-Based Business;Ansoff;Harv. Bus. Rev.,1971
2. Technological Forecasting and Long Range Planning;Ayres,1969
3. Technological Forecasting: Who Does It and How Useful Is It?;Balachandra;Technol. Forecast. Soc. Change,1980
4. An Innovation Index Based on Factor Analysis;Blackman;Technol. Forecast. Soc. Change,1973
5. A Guide to Practical Technology Forecasting;Bright,1972