Key points are not available for this paper at this time.
David M. Levy, Nestor E. Terleckyj, Effects of Government R&D on Private R&D Investment and Productivity: A Macroeconomic Analysis, The Bell Journal of Economics, Vol. 14, No. 2 (Autumn, 1983), pp. 551-561
Levy et al. (Sat,) studied this question.