?url_ver=Z39.88-2004&rft_id=10.1109%2FITSIM.2010.5561350&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Saei&rft.au=Saei%2C+S.N.S.M.&rft.aufirst=S.N.S.M.&rft.isbn=9781424467181&rft.date=2010&rft.title=Mental+model+of+blind+users+to+assist+designers+in+system+development&rft.genre=proceeding