@InProceedings{	  hilty.ea:usage:2006,
  author	= {M. Hilty and A. Pretschner and C. Schaefer and T. Walter},
  booktitle	= {International Conference on Systems and Networks
		  Communications},
  language	= {USenglish},
  month		= {November},
  note		= {Best paper award.},
  publisher	= {IEEE},
  title		= {Usage Control Requirements in Mobile and Ubiquitous
		  Computing Applications},
  year		= 2006,
  user		= {pretscha}
}