@article {9597,
	title = {Strain effects in graphene and graphene nanoribbons: The underlying mechanism},
	journal = {Nano Research},
	year = {2010},
	pages = {545-556},
	doi = {10.1007/s12274-010-0015-7},
	author = {Yang Li and Xiaowei Jiang and Zhongfan Liu and Zhirong Liu}
}
