@InProceedings{Astrand2009local,
	author=	{Matti Astrand and Patrik Floreen and Valentin Polishchuk and Joel Rybicki and Jukka Suomela and Jara Uitto},
	title=	{{A Local 2-approximation Algorithm for the Vertex Cover Problem}},
	booktitle=	{{23rd International Conference on Distributed Computing , Elche/Elx, Spain}},
	month=	{September},
	year=	{2009},
}