?url_ver=Z39.88-2004&rft_id=10.1109%2FITSIM.2010.5561307&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=A.&rft.au=Ahsanullah%2C+A.&rft.aulast=Ahsanullah&rft.isbn=9781424467181&rft.title=Investigation+of+fingertip+blobs+on+optical+multi-touch+screen&rft.date=2010&rft.genre=proceeding