00380nas a2200157   4500000000100000000000100001008004100002100001500043700001700058700001300075700001300088700001700101245009000118300000700208490000700215       2013                            d1 aK. Akiyama1 aR. Takahashi1 aM. Honma1 aT. Oyama1 aH. Kobayashi00aMulti-Epoch VERA Observations of Sagittarius A*. I. Images and Structural Variability  a910 v65