Adams, James; Clemmons, J. Roger - National Bureau of Economic Research (NBER) - 2008
outside the firm, with most of the returns to scale in production deriving from outside knowledge. In turn, the largest … citations received, a measure of their importance. Consistent with the role assigned to knowledge spillovers in growth theory …, the importance of outside knowledge, especially that of universities, increases from the firm to the industry level. The …