@article{1092096,
  author = {K. Akiyama and Stawarz and Y.~T. Tanaka and H. Nagai and M. Giroletti and M. Honma},
  title = {EVN Observations of HESS J1943+213: Evidence for an Extreme TeV BL Lac Object},
  year = {2016},
  journal = {ApJ},
  volume = {823},
  pages = {L26},
  doi = {10.3847/2041-8205/823/2/L26},
  language = {eng},
}