Authors: S Gillessen; R Genzel; T K Fritz; E Quataert; C Alig; A Burkert; J Cuadra; F Eisenhauer; O Pfuhl; K Dodds-Eden; C F Gammie; T Ott Journal: Nature Date: 2011-12-14 Impact factor: 49.962
Authors: L Meyer; A M Ghez; R Schödel; S Yelda; A Boehle; J R Lu; T Do; M R Morris; E E Becklin; K Matthews Journal: Science Date: 2012-10-05 Impact factor: 47.728