@incollection{gkoninis2011,
	Author = {Giannakopoulos, Yiannis and Koninis, Christos},
	Booktitle = {Distributed Self-organized Societies of Tiny Artefacts: Design \& Implementation},
	Chapter = {5},
	Editor = {Chatzigiannakis, Ioannis and Spirakis, Paul},
	Isbn = {5800059245538},
	Url = {http://www.lulu.com/shop/ioannis-chatzigiannakis-and-paul-spirakis/distributed-self-organized-societies-of-tiny-artefacts/ebook/product-17351459.html},
	Month = may,
	Publisher = {Lulu Publishers},
	Title = {Data Aggregation},
	Year = {2011}}