@InProceedings{Kranz2006UbiquitousPresenceSystems,
author = {Matthias Kranz and Paul Holleis and Albrecht Schmidt},
title = {Ubiquitous Presence Systems},
booktitle = {Proceedings of the 2006 ACM Symposium on Applied Computing},
pages = {1902--1909},
year = {2006},
editor = {Hisham Haddad and Richard Chbeir and Sascha Ossowski and Roger Wainwright and Lorie Liebrock and Mathew Palakal and Kokou Yetongnon and Christophe Nicolle},
volume = {2},
number = {1},
series = {Applied Computing},
address = {Dijon, France},
month = {April},
organization = {ACM SIGAPP},
publisher = {ACM},
ISBN = {1-59593-108-2},
}