?url_ver=Z39.88-2004&rft_id=doi%3A10.1007%2Fs10198-003-0218-x&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Pammolli&rft.aufirst=Fabio&rft.au=Pammolli%2C+Fabio&rft.issn=1618-7598&rft.title=The+European+Journal+of+Health+Economics&rft.atitle=Dynamic+competition+in+pharmaceuticals%3A+Patent+expiry%2C+generic+penetration%2C+and+industry+structure&rft.date=2004&rft.volume=5&rft.issue=2&rft.pages=175-182&rft.genre=article