@misc{murray2009a,
  title={{G}aussian processes and fast matrix-vector multiplies},
  author={Iain Murray},
  year={2009},
  note={Presented at the Numerical Mathematics in Machine Learning workshop at the 26th International Conference on Machine Learning (ICML 2009), Montreal, Canada.},
  url={http://www.cs.toronto.edu/~murray/pub/09gp_eval/}
}