@article {10869,
	title = {The effect of disorder on the valley-dependent transport in zigzag graphene nanoribbons},
	journal = {Journal of Applied Physics},
	year = {2011},
	doi = {10.1063/1.3599930},
	author = {Ying-Tao Zhang and Qing-Feng Sun and X.C. Xie}
}
