?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Gragnani%2C+A.&rft.aulast=Gragnani&rft.aufirst=A.&rft.date=1995&rft.title=Slow-Fast+limit+cycles+in+controlled+drug+markets&rft.genre=proceeding