00326nas a2200121   4500000000100000000000100001008004100002100001500043700002500058245010600083300000700189490000800196       2011                            d1 aV. L. Fish1 aet S. S. Doleman al.00a1.3 mm Wavelength VLBI of Sagittarius A*: Detection of Time-variable Emission on Event Horizon Scales  a360 v727