Patent Citations and the Geography of Knowledge Spillovers: A Reassessment by Peter Thompson and Melanie Fox-Kean. Published in volume 95, issue 1, pages 450-460 of American Economic Review, March 2005

Patent Citations and the Geography of Knowledge Spillovers: A Reassessment: Reply by Peter Thompson and Melanie Fox-Kean. Published in volume 95, issue 1, pages 465-466 of American Economic Review, March 2005