@InProceedings{Locher2009Foundations,
	 author =	{Thomas Locher},
	 title =	{{Foundations of Aggregation and Synchronization in Distributed Systems}},
	 booktitle =	{{PhD Thesis, ETH Zurich, Diss. ETH No. 18249}},
	 month =	{February},
	 year =		{2009}
}