Authors: L J Tacconi; R Genzel; R Neri; P Cox; M C Cooper; K Shapiro; A Bolatto; N Bouché; F Bournaud; A Burkert; F Combes; J Comerford; M Davis; N M Förster Schreiber; S Garcia-Burillo; J Gracia-Carpio; D Lutz; T Naab; A Omont; A Shapley; A Sternberg; B Weiner Journal: Nature Date: 2010-02-11 Impact factor: 49.962