@article{efficientlearningofquadraticvariance,
  title = {Efficient Learning of Quadratic Variance Function Directed Acyclic Graphs via Topological Layers},
  author = {Wei Zhou and Xin He and Wei Zhong and Junhui Wang},
  year = {2021},
  eprint = {2111.01560},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2111.01560v1},
}