@article{JMLR:v19:18-015,
  author  = {Matthew M. Dunlop and Mark A. Girolami and Andrew M. Stuart and Aretha L. Teckentrup},
  title   = {How Deep Are Deep Gaussian Processes?},
  journal = {Journal of Machine Learning Research},
  year    = {2018},
  volume  = {19},
  number  = {54},
  pages   = {1--46},
  url     = {http://jmlr.org/papers/v19/18-015.html}
}