?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=A.A.&rft.aulast=Leen&rft.au=Leen%2C+A.A.&rft.isbn=078038671X%3B+9780780386716&rft.date=2004&rft.title=Effect+of+window+size+and+its+location+on+resonant+frequencies+of+a+rectangular+microstrip+antenna&rft.genre=proceeding