?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Dinh%2C+Thi+Thai+Mai&rft.aulast=Dinh&rft.aufirst=Thi+Thai+Mai&rft.date=12+September+2018&rft.title=Bluetooth+Low+Energy+based+Indoor+Positioning+on+iOS+platform&rft.genre=proceeding