00571nas a2200217   4500000000100000000000100001008004100002100001600043700001500059700001800074700001700092700001900109700002000128700001700148700002200165700001900187700004600206245008800252300000700340490000600347       2016                            d1 aV. L. Fish1 aK. Akiyama1 aK. L. Bouman1 aA. A. Chael1 aM. D. Johnson1 aS. S. Doeleman1 aL. Blackburn1 aJ. F. C. Wardle1 aW. T. Freeman1 athe Event Horizon Telescope Collaboration00aObserving–-and Imaging–-Active Galactic Nuclei with the Event Horizon Telescope  a540 v4