TY - JOUR A1 - et R. Lu al. AU - BT - ApJ IS - 1 LA - eng PY - 2018 EP - 60 T1 - Detection of intrinsic source structure at ~3 Schwarzschild radii with Millimeter-VLBI observations of Sgr A* T2 - ApJ TI - Detection of intrinsic source structure at ~3 Schwarzschild radii with Millimeter-VLBI observations of Sgr A* VL - 859 Y1 - 2018 ER -