@book{Heckmann06,
	author 		= {Dominik Heckmann},
	title 		= {{Ubiquitous User Modeling}},
	year 		= {2006},
	isbn 		= {3-89838-297-4},
	publisher = {Akademische Verlagsgesellschaft Aka GmbH},
	address 	= {Berlin, Germany}}