@article {sprangle2002gev,
	title = {GeV acceleration in tapered plasma channels},
	journal = {Physics of Plasmas},
	volume = {9},
	number = {5},
	year = {2002},
	pages = {2364{\textendash}2370},
	publisher = {American Institute of Physics},
	author = {Sprangle, P and Pe{\~n}ano, JR and Hafizi, B and Hubbard, RF and Ting, A and Gordon, DF and Zigler, A and Antonsen Jr, TM}
}
