@article{Ha19,
  author = {Ha, Saerom and Oh, Sojin and Back, Jonghee and Yoon, Sung-Eui and Moon, Bochang},
  title = {Gradient Outlier Removal for Gradient-Domain Path Tracing},
  journal = {Computer Graphics Forum},
  volume = {38},
  number = {2},
  pages = {245-253},
  year = {2019}
}