@inproceedings{Spero04b,
  author =	 "D. J. Spero and R. A. Jarvis",
  title =	 "Towards Exteroceptive Based Localisation",
  booktitle =	 "IEEE Conference on Robotics, Automation and
                  Mechatronics",
  address =	 "Singapore",
  month =	 "1-3 Dec.",
  year =	 2004,
  pages =	 "822--827"
}