@InProceedings{Sommer2008symmetric,
	author=	{Philipp Sommer and Roger Wattenhofer},
	title=	{{Symmetric Clock Synchronization in Sensor Networks}},
	booktitle=	{{ACM Workshop on Real-World Wireless Sensor Networks (REALWSN), Glasgow, Scotland, UK}},
	month=	{April},
	year=	{2008},
}