@misc{kravchenko2021atmosphere,
  title={Atmosphere of Betelgeuse before and during the Great Dimming event revealed by tomography},
  author={K. Kravchenko and A. Jorissen and S. Van Eck and T. Merle and A. Chiavassa and C. Paladini and B. Freytag and B. Plez and M. Montargès and H. Van Winckel},
  year={2021},
  eprint={2104.08105},
  archivePrefix={arXiv},
  primaryClass={astro-ph.SR},
  doi={10.1051/0004-6361/202039801},
  url={https://arxiv.org/abs/2104.08105}
}