?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Tran%2C+Thi+Thuy+Quynh&rft.aulast=Tran&rft.aufirst=Thi+Thuy+Quynh&rft.date=1+August+2012&rft.title=On+Optimization+of+Antennas+without+Phase+Center+for+DOA+estimation&rft.genre=proceeding