@article{1435199,
  author = {et Z. Zhu al.},
  title = {Testing General Relativity with the Black Hole Shadow Size and Asymmetry of Sagittarius A*: Limitations from Interstellar Scattering},
  year = {2019},
  journal = {ApJ},
  volume = {870},
  pages = {6},
  url = {https://iopscience.iop.org/article/10.3847/1538-4357/aaef3d},
  language = {eng},
}