@conference{Held02,
	author = {Held, A., Buchholz, S., Schill, A.},
	title = {Modeling of Context Information for Pervasive Computing Applications},
	year = {2002},
	organization = {Proc. of the 6th World Multiconference on Systemics, Cybernetics and Informatics (SCI2002), Orlando, FL, Jul 2002}
}