@conference {sprangle2001gev,
	title = {GeV energy gain in a channel guided laser wakefield accelerator},
	booktitle = {AIP Conference Proceedings},
	volume = {569},
	number = {1},
	year = {2001},
	pages = {242{\textendash}248},
	publisher = {American Institute of Physics},
	organization = {American Institute of Physics},
	author = {Sprangle, P and Hafizi, B and Pe{\~n}ano, JR and Hubbard, RF and Ting, A and Zigler, A and Antonsen Jr, TM}
}
