NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Davina Ling

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NBER Working Papers and Publications

January 2003The Long Shadow of Patent Expiration. Generic Entry and Rx-to-OTC Switches
with Ernst R. Berndt, Margaret Kyle
in Scanner Data and Price Indexes, Robert C. Feenstra and Matthew D. Shapiro, editors
 
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