?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Nguyen%2C+Van+Hung&rft.aulast=Nguyen&rft.aufirst=Van+Hung&rft.date=August+2015&rft.title=Optimal+Design+of+Cicular+and+Rectangular+Patch+Antennas+at+5GHz+using+PSO+Algorithm&rft.genre=proceeding