?url_ver=Z39.88-2004&rft_id=10.1109%2FICOS.2013.6735054&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=H.D.&rft.au=Pham%2C+H.D.&rft.aulast=Pham&rft.title=Development+of+vehicle+tracking+system+using+GPS+and+GSM+modem&rft.date=2013&rft.isbn=9781479902859&rft.genre=proceeding