@INPROCEEDINGS {1105,
author={C. A. Fernandes and A. Barbosa},
doi={},
booktitle={International Symp. on Antennas and Propagation - ISAP},
title={Radiation From a Multifilar Helix Fed by a Circular Waveguide},
year={1989},
month={August},
volume={1},
pages={505-508} 
}