@InProceedings{Chechik2012Sparse,
	 author =	{Shiri Chechik and Yuval Emek and Boaz Patt-Shamir and David Peleg},
	 title =	{{Sparse Reliable Graph Backbones}},
	 booktitle =	{{Information and Computation.Volume 210. p. 31-39}},
	 month =	{May},
	 year =		{2012}
}