@article {5083,
	title = {Absorption saturation in optically excited graphene},
	journal = {Applied Physics Letters},
	year = {2012},
	doi = {10.1063/1.4768780},
	author = {Torben Winzer and Andreas Knorr and Martin Mittendorff and Stephan Winnerl and Miao-Bin Lien and Dong Sun and Theodore B. Norris and Manfred Helm and Ermin Malic}
}
