?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Tran%2C+Ba+Tan&rft.aulast=Tran&rft.aufirst=Ba+Tan&rft.issue=5&rft.volume=28&rft.date=2015&rft.issn=1859-3585&rft.atitle=Design+an+power+amplifier+for+a+digital+underwater+modem+using+FSK+modulation&rft.title=Journal+of+Science+and+Technology&rft.pages=15-18&rft.genre=article