Authors: M Bachetti; F A Harrison; D J Walton; B W Grefenstette; D Chakrabarty; F Fürst; D Barret; A Beloborodov; S E Boggs; F E Christensen; W W Craig; A C Fabian; C J Hailey; A Hornschemeier; V Kaspi; S R Kulkarni; T Maccarone; J M Miller; V Rana; D Stern; S P Tendulkar; J Tomsick; N A Webb; W W Zhang Journal: Nature Date: 2014-10-09 Impact factor: 49.962