00439nas a2200181   4500000000100000000000100001008004100002100001700043700001500060700001700075700001800092700001300110700001900123700001500142245008500157300000700242490000800249       2012                            d1 aT. Johannsen1 aD. Psaltis1 aS. Gillessen1 aD. P. Marrone1 aF. Özel1 aS. S. Doeleman1 aV. L. Fish00aMasses of nearby Supermassive Black Holes with Very Long Baseline Interferometry  a300 v758