@article{JMLR:v22:20-513,
  author  = {Xi Chen and Victor Chernozhukov and Ivan Fernandez-Val and Scott Kostyshak and Ye Luo},
  title   = {Shape-Enforcing Operators for Generic Point and Interval  Estimators of Functions},
  journal = {Journal of Machine Learning Research},
  year    = {2021},
  volume  = {22},
  number  = {220},
  pages   = {1--42},
  url     = {http://jmlr.org/papers/v22/20-513.html}
}