@inproceedings{kagal_korolev_chen_joshi_finin, 
  title={Centaurus: a framework for intelligent services in a mobile environment}, 
  DOI={10.1109/cdcs.2001.918705}, 
  publisher={IEEE Comput. Soc}, 
  author={Kagal and Korolev and Chen and Joshi and Finin}
  }