ALMA reveals a chemically evolved submillimeter galaxy at z = 4.76 T. Nagao, R. Maiolino, C. De Breuck, P. Caselli, B. Hatsukade and K. Saigo A&A, 542 (2012) L34 Published online: 13 June 2012 DOI: 10.1051/0004-6361/201219518