%0 Journal Article %J ApJ %D 2019 %T Testing General Relativity with the Black Hole Shadow Size and Asymmetry of Sagittarius A*: Limitations from Interstellar Scattering %A Z. Zhu et al. %B ApJ %V 870 %P 6 %G eng %U https://iopscience.iop.org/article/10.3847/1538-4357/aaef3d %N 1