TY - JOUR
A1 - et The EHT Collaboration al.
AU - 
BT - ApJL
LA - eng
PY - 2019
EP - 2
T1 - First M87 Event Horizon Telescope Results. II. Array and Instrumentation
T2 - ApJL
TI - First M87 Event Horizon Telescope Results. II. Array and Instrumentation
UR - https://iopscience.iop.org/article/10.3847/2041-8213/ab0c96
VL - 875
Y1 - 2019
ER -