@article {12510,
	title = {Ultrafast third-order nonlinear optical properties of graphene in aqueous solution and polyvinyl alcohol film},
	journal = {Chemical Physics LettersChemical Physics Letters},
	volume = {523},
	year = {2012},
	pages = {104-106},
	isbn = {00092614},
	author = {Chu, Saisai and Wang, Shufeng and Qihuang Gong}
}
