Haskel, Jonathan; Wallis, Gavin - 2010
we use data on market sector productivity, R&D and non-R&D intangible assets, and public sector R&D spending. We look for … evidence of market sector spillovers from intangible investment and from public R&D. We find (a) no evidence of spillover … effects from intangible investment at the market sector level, including from R&D, (b) strong evidence of market sector …