@booklet {sprangle2017active,
	title = {Active remote detection of radioactivity based on electromagnetic signatures},
	year = {2017},
	note = {US Patent 9,835,761},
	publisher = {Google Patents},
	author = {Sprangle, Phillip A and Hafizi, Bahman and Zigler, Arie and Nusinovich, Gregory and Milchberg, Howard}
}
