@article{1309638,
  author = {F. Roelofs and M. D. Johnson and H. Shiokawa and S. S. Doeleman and H. Falcke},
  title = {Quantifying Intrinsic Variability of Sagittarius A* Using Closure Phase Measurements of the Event Horizon Telescope},
  year = {2017},
  journal = {ApJ},
  volume = {847},
  pages = {19},
  language = {eng},
}