@article {sprangle2001wakefield,
	title = {Wakefield generation and GeV acceleration in tapered plasma channels},
	journal = {Physical Review E},
	volume = {63},
	number = {5},
	year = {2001},
	pages = {056405},
	publisher = {APS},
	author = {Sprangle, Phillip and Hafizi, B and Pe{\~n}ano, JR and Hubbard, RF and Ting, A and Moore, CI and Gordon, DF and Zigler, A and Kaganovich, D and Antonsen Jr, TM}
}
