@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}
}