@INPROCEEDINGS {5057,
author={M. G. Silveirinha and N. Engheta},
doi={},
booktitle={IEEE AP-S/URSI International Symp.},
title={Squeezing Electromagnetic Energy Through Narrow 3-D Coaxial Channels of Arbitrary Shape Filled with Epsilon-near-Zero Materials},
year={2007},
month={June},
volume={1},
pages={3316-3319} 
}