@article{1309625,
  author = {R. Fraga-Encinas and M. Mo{\'s}cibrodzka and C. Brinkerink and H. Falcke},
  title = {Probing spacetime around Sagittarius A* using modeled VLBI closure phases},
  year = {2016},
  journal = {A\&A},
  volume = {588},
  language = {eng},
}