@Article{ars-4-25-2006,
AUTHOR = {Armbrecht, G. and Klemp, O. and Eul, H.},
TITLE = {Spherical mode analysis of planar frequency-independent multi-arm antennas based on its surface current distribution},
JOURNAL = {Advances in Radio Science},
VOLUME = {4},
YEAR = {2006},
PAGES = {25--32},
URL = {http://www.adv-radio-sci.net/4/25/2006/},
ISSN = {1684-9965}
}