?url_ver=Z39.88-2004&rft_id=10.1109%2FDASA53625.2021.9682236&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=S.S.&rft.aulast=Alshahri&rft.au=Alshahri%2C+S.S.&rft.isbn=9781665416344&rft.title=Design+and+Implementation+of+Guidance+System+for+Visually+Impaired+People&rft.date=2021&rft.genre=proceeding