00353nas a2200121   4500000000100000000000100001008004100002100002200043245008400065856006700149300000700216490000800223       2020                            d1 aet M. Wielgus al.00aMonitoring the Morphology of M87* in 2009-2017 with the Event Horizon Telescope  uhttps://ui.adsabs.harvard.edu/abs/2020ApJ...901...67W/abstract  a280 v901