@InProceedings{dowson04metric,
  author =	 {N. Dowson and R. Bowden},
  title =	 {Metric Mixtures for Mutual Information Tracking},
  booktitle =	 {Proc. 17th Int'l Conf. on Pattern Recognition},
  pages =	 {752--756},
  year =	 {2004},
  volume =	 {2},
  address =	 {Cambridge, UK},
  month =	 {August},
  note =	 {http://www.ee.surrey.ac.uk/personal/n.dowson/papers/dowson04metricmixtures-preprint.pdf},
}