@article{JMLR:v20:19-065,
  author  = {Christian Agrell},
  title   = {Gaussian Processes with Linear Operator Inequality Constraints},
  journal = {Journal of Machine Learning Research},
  year    = {2019},
  volume  = {20},
  number  = {135},
  pages   = {1--36},
  url     = {http://jmlr.org/papers/v20/19-065.html}
}