?url_ver=Z39.88-2004&rft_id=10.1109%2FNatPC.2011.6136413&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=M.&rft.aulast=Gizaw&rft.au=Gizaw%2C+M.&rft.isbn=9781457718847&rft.date=2011&rft.title=STEP+based+product+data+model+for+turn-mill+operations&rft.genre=proceeding