@article{efficientmultiscalegaussianprocess,
  title = {Efficient Multiscale Gaussian Process Regression using Hierarchical Clustering},
  author = {Z. Zhang and K. Duraisamy and N. A. Gumerov},
  year = {2015},
  eprint = {1511.02258},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1511.02258v2},
}