%0 Journal Article %A L. Medeiros %A C.-K. Chan %A F. Özel %A D. Psaltis %A J. Kim %A D. P. Marrone %A A. Sadowski %B ApJ %D 2018 %G eng %N 2 %P 13 %T GRMHD Simulations of Visibility Amplitude Variability for Event Horizon Telescope Images of Sgr A* %V 856