Montobbio, Fabio; Sterzi, Valerio - 2009
, United Kingdom, and United States). Byusing patents and patent citations at the United States Patent and Trademark Office we … spillovers, patent citations related spillovers, and face-to-face contact spillovers. Ourresults, based on data for Argentina … effects, bilateral patent citations and face-to-face relationships between inventors are bothimportant additional mechanisms …