The Structure of Canadian Inter-Industry R & D Spillovers, and the Rates of Return to R & D
估计了加拿大九个主要产业间研发溢出对生产成本的影响，发现所有产业都受溢出影响，且研发的私人回报率至少是物质资本的两倍半，考虑溢出后回报率更高。
This paper estimates the effects of interindustry R&D spillovers on the production cost of nine major Canadian industries. Production costs in all nine are affected by spillovers and six industries are influenced by at least two different source industries. Rates of return to R&D capital for each industry are also estimated. Private rates of return on R&D are at least two and a half times those on physical capital. Rates of return on R&D, inclusive of spillovers, are also computed: for industries that are major sources of spillover, the spillover-inclusive returns are at least twice the private returns. Copyright 1989 by Blackwell Publishing Ltd.