00550nas a2200229   4500000000100000000000100001008004100002100002000043700001700063700001400080700001300094700001500107700001500122700001500137700001800152700002200170700001400192700001700206245008100223300000800304490000800312       1998                            d1 aT. P. Kirchbaum1 aD. A. Graham1 aA. Witzel1 aA. Greve1 aJ. E. Wink1 aM. Grewing1 aF. Colomer1 ade P. Vicente1 aJ. Gomez-Gonzalez1 aA. Baudry1 aJ. A. Zenzus00aVLBI observations of the galactic center source Sgr A* at 86 GHz and 215 GHz  a1060 v335