@article {penano2005transmission,
	title = {Transmission of intense femtosecond laser pulses into dielectrics},
	journal = {Physical Review E},
	volume = {72},
	number = {3},
	year = {2005},
	pages = {036412},
	publisher = {APS},
	author = {Pe{\~n}ano, JR and Sprangle, P and Hafizi, B and Manheimer, W and Zigler, A}
}
