@article {Card1977,
	title = {Electronic processes at grain boundaries in polycrystalline semiconductors under optical illumination},
	journal = {IEEE Transactions on Electron Devices},
	volume = {ED-24},
	year = {1977},
	note = {<br />},
	pages = {397-402},
	author = {Card, H.C. and Yang, E.S.}
}
