@misc{diebold2020optimal,
  title={Optimal Combination of Arctic Sea Ice Extent Measures: A Dynamic Factor Modeling Approach},
  author={Francis X. Diebold and Maximilian Göbel and Philippe Goulet Coulombe and Glenn D. Rudebusch and Boyuan Zhang},
  year={2020},
  eprint={2003.14276},
  archivePrefix={arXiv},
  primaryClass={stat.AP},
  url={https://arxiv.org/abs/2003.14276}
}