@article {9813,
	title = {Two-dimensional topological insulator state and topological phase transition in bilayer graphene},
	journal = {Physical Review Letters},
	year = {2011},
	doi = {10.1103/PhysRevLett.107.256801},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/22243099},
	author = {Zhenhua Qiao and Wang-Kong Tse and Hua Jiang and Yugui Yao and Qian Niu}
}
