?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Liao%2C+J&rft.aufirst=J&rft.aulast=Liao&rft.atitle=Robust+Power-Splitting+SWIPT+Beamforming+for+Broadcast+Channels&rft.volume=20&rft.date=1+January+2016&rft.title=IEEE+Communications+Letters&rft.pages=181-184&rft.issue=1&rft.genre=article