@InProceedings{cassens06:_using_activ_theor_to_model_contex_awaren,
  author =	 {J{\"o}rg Cassens and Anders Kofod-Petersen},
  title =	 {Using Activity Theory to Model Context Awareness: a
                  Qualitative Case Study},
  booktitle =	 {Proceedings of the 19th International Florida
                  Artificial Intelligence Research Society Conference},
  year =	 2006,
  pages =	 {619-624},
  address =	 {Florida, USA},
  month =	 {May},
  publisher =	 {AAAI Press}
}