%0 Journal Article %A M. D. Johnson %A A. Loeb %A H. Shiokawa %A A. A. Chael %A S. S. Doeleman %B ApJ %D 2015 %G eng %P 132 %R 10.1088/0004-637X/813/2/132 %T Measuring the Direction and Angular Velocity of a Black Hole Accretion Disk via Lagged Interferometric Covariance %V 813 %8 11/2015