@article {papeer2011microwave,
	title = {Microwave diagnostics of femtosecond laser-generated plasma filaments},
	journal = {Applied Physics Letters},
	volume = {99},
	number = {14},
	year = {2011},
	publisher = {AIP Publishing},
	author = {Papeer, J and Mitchell, C and Penano, J and Ehrlich, Y and Sprangle, P and Zigler, A}
}
