@article {10769,
	title = {The level-shifting-induced negative magnetoresistance in the nearest-neighbor hopping conduction},
	journal = {Europhysics Letters},
	year = {1999},
	pages = {368-373},
	doi = {10.1209/epl/i1999-00173-x},
	author = {X.R. Wang and S.C. Ma and X.C. Xie}
}
