@InProceedings{Sarma2012distributed,
	author=	{Atish Das Sarma and Stephan Holzer and Liah Kor and Amos Korman and Danupon Nanongkai and Gopal Pandurangan and David Peleg and Roger Wattenhofer},
	title=	{{Distributed Verification and Hardness of Distributed Approximation}},
	booktitle=	{{SIAM Journal on Computing (special issue of STOC 2011)}},
	month=	{November},
	year=	{2012},
}