@article{helenmaliciouslysecurecoopetitivelearnin,
  title = {Helen: Maliciously Secure Coopetitive Learning for Linear Models},
  author = {Wenting Zheng and Raluca Ada Popa and Joseph E. Gonzalez and Ion Stoica},
  year = {2019},
  eprint = {1907.07212},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1907.07212v2},
}