@article {Kingsbury1952,
	title = {Photoelectric Properties of Tonically Bombarded Silicon},
	journal = {Bell Systems Technical Journal},
	volume = {31},
	year = {1952},
	note = {<br />},
	pages = {802-815},
	author = {Kingsbury, E.F. and Ohl, R.S.}
}
@article {Ohl1941,
	title = {Light-Sensitive Electric Device},
	journal = {U.S. Patent},
	volume = {2},
	year = {1941},
	note = {<br />},
	month = {05/1941},
	pages = {402, 602},
	author = {Ohl, R.S.}
}
