@article {9990,
	title = {Engineering quantum anomalous/valley Hall states in graphene via metal-atom adsorption: An ab-initio study},
	journal = {Physical Review B - Condensed Matter and Materials Physics},
	year = {2011},
	doi = {10.1103/PhysRevB.84.195444},
	author = {Jun Ding and Zhenhua Qiao and Wanxiang Feng and Yugui Yao and Qian Niu}
}
