@article {2462,
	title = {Transmission- Line Model and Propagation in a Negative-Index, Parallel-Plate Metamaterial to Boost Electron-Beam Interaction},
	journal = {IEEE Transactions on Antennas and Propagation},
	volume = {62},
	number = {3212 },
	year = {2014},
	url = {http://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true\&arnumber=6758351},
	author = {N. A. Estep and A. N. Askarpour and S. Trendafilov and Shvets, G. and A. Alu}
}
