Bloom, Nicholas, Mark Schankerman, and John Van Reenen. “IDENTIFYING TECHNOLOGY SPILLOVERS AND PRODUCT MARKET RIVALRY.” Econometrica 81.4 (2013): 1347–1393. Web. R&D Spillovers: The research identifies two main types of spillover effects from Research and Development (R&D). The first is technology or knowledge spillovers, which can enhance the productivity of other firms in similar technological fields. Product Market …