@article{machinelearningmomentclosuremodelsfor,
  title = {Machine learning moment closure models for the radiative transfer equation I: directly learning a gradient based closure},
  author = {Juntao Huang and Yingda Cheng and Andrew J. Christlieb and Luke F. Roberts},
  year = {2021},
  eprint = {2105.05690},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2105.05690v2},
}