@article{1087821,
  author = {K. Hada and M. Kino and A. Doi and H. Nagai and M. Honma and Y. Hagiwara and M. Giroletti and G. Giovannini and N. Kawaguchi},
  title = {The Innermost Collimation Structure of the M87 Jet Down to \~10 Schwarzschild Radii},
  year = {2013},
  journal = {ApJ},
  volume = {775},
  pages = {70},
  doi = {10.1088/0004-637X/775/1/70},
  language = {eng},
}