@article {Nix1939,
	title = {A Thallous Sulphide Photo EMF Cell},
	journal = {Journal Opt. Society of America},
	volume = {29},
	year = {1939},
	note = {<br />},
	pages = {457},
	author = {Nix, F.C. and Treptwo, A.W.}
}
