@article{JMLR:v23:21-1128,
  author  = {Dennis Nieman and Botond Szabo and Harry van Zanten},
  title   = {Contraction rates for sparse variational approximations in Gaussian process regression},
  journal = {Journal of Machine Learning Research},
  year    = {2022},
  volume  = {23},
  number  = {205},
  pages   = {1--26},
  url     = {http://jmlr.org/papers/v23/21-1128.html}
}