?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Tong%2C+Van+Luyen&rft.aulast=Tong&rft.aufirst=Van+Luyen&rft.date=November+2014&rft.title=Nulling+and+Steering+of+Beam+in+Planar+Antenna+Arrays&rft.genre=proceeding