1. Aaker, D., and Tyebjee, T. 1978. “A model for the selection of interdependent R and D projects.” IEEE Transactions on Engineering Management. Vol 25, pp. 2.
2. Albala, A. 1975. “Stage approach for the evaluation and selection of R and D projects.” IEEE Transactions on Engineering Management. Vol 22, pp. 4.
3. Allen, J.M., 1970. “A survey into the RandD evaluation and control procedures currently used in industry.” Journal of Industrial Economics. Vol 18, pp. 161–181.
4. Anonymous, 1978. “Top-down and bottom-up approaches to project selection,” Research Management, March, 22–24.
5. Asher, D.I., 1962. “A linear programming model for the allocation of R and D efforts.” IRE Transactions on Engineering Management. Vol. EM-16, pp. 2–8.