Note on Duplication of R&D and R&D Subsidies
The authors demonstrate that the presumed incompatibility of uncoordinated R&D and competition is not fundamental, but hinges on the nature of R&D spillovers. As a consequence, R&D subsidies may be more effective than previously thought, according to the authors
Link
http://www.economicsbulletin.com/2004/volume12/EB-04L10011A.pdf