TY - JOUR
A1 - et The EHT Collaboration al.
AU - 
BT - ApJL
LA - eng
PY - 2019
EP - 6
T1 - First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole
T2 - ApJL
TI - First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole
UR - https://iopscience.iop.org/article/10.3847/2041-8213/ab1141
VL - 875
Y1 - 2019
ER -