"Electronic documents." . . "1980-2000" . . "Innovationsdiffusion" . . "Spillovers in space : does geography matter?" . "Spillovers in space : does geography matter?"@en . . . . . . . . . . . . "We simultaneously assess the contributions to productivity of three sources of research and development spillovers: geographic, technology and product-market proximity. To do this, we construct a new measure of geographic proximity that is based on the distribution of a firm's inventor locations rather than its headquarters, and we report both parametric and semiparametric estimates of our geographic- distance functions. We find that: i) Geographic space matters even after conditioning on horizontal and technological spillovers; ii) Technological proximity matters; iii) Product-market proximity is less important; iv) Locations of researchers are more important than headquarters but both have explanatory power; and v) Geographic markets are very local."@en . "We simultaneously assess the contributions to productivity of three sources of research and development spillovers: geographic, technology and product-market proximity. To do this, we construct a new measure of geographic proximity that is based on the distribution of a firm's inventor locations rather than its headquarters, and we report both parametric and semiparametric estimates of our geographic- distance functions. We find that: i) Geographic space matters even after conditioning on horizontal and technological spillovers; ii) Technological proximity matters; iii) Product-market proximity is less important; iv) Locations of researchers are more important than headquarters but both have explanatory power; and v) Geographic markets are very local." . . . . "Spillovers in space" . . . . . . . . . . . . . "Spillovers in space: does geography matter?" . . . . . . "Spillovers in space does geography matter?" . "Spillovers in space does geography matter?"@en . . . . . . . . . "Spillovers in Space Does Geography Matter?"@en . "Spillovers in Space Does Geography Matter?" . . . . . . . . . "Spillovers in Space : Does Geography Matter?" . . . "Betriebliche Forschung" . . "Spillover-Effekt" . . "USA" . . "Entfernung" . . "Wirtschaftsgeographie" . . "Forschungs- und Technologiepolitik" . . . .