1. On the theory of induced innovation;Ahmad;Economic Journal,1966
2. Bartelsman, E., Gray, W., 1994. NBER Manufacturing Productivity Database. NBER Technical Working Paper.
3. Berndt, E.R., Field, B.C. (Eds.), 1982. Modeling and Measuring Natural Resource Substitution. MIT Press, Cambridge, MA.
4. Technology, prices, and the derived demand for energy;Berndt;Review of Economics and Statistics,1975
5. Berndt, E.R., Morrison, C.J., Watkins, G.C., 1981. Dynamic models of energy demand: an assessment and comparison. In: Field, B.C., Berndt, E.R. (Eds.), Modeling and Measuring Natural Resource Substitution. MIT Press, Cambridge, MA, pp. 259–289.