@article{1092071,
  author = {K. Akiyama and K. Kuramochi and S. Ikeda and V.~L. Fish and F. Tazaki and M. Honma and S.~S. Doeleman and A.~E. Broderick and J. Dexter and M. Mo{\'s}cibrodzka and K.~L. Bouman and A.~A. Chael and M. Zaizen},
  title = {Imaging the Schwarzschild-radius-scale Structure of M87 with the Event Horizon Telescope Using Sparse Modeling},
  year = {2017},
  journal = {ApJ},
  volume = {838},
  pages = {1},
  doi = {10.3847/1538-4357/aa6305},
  language = {eng},
}