Nuclear interaction gamma-ray lines from the Galactic center region V. A. Dogiel, V. Tatischeff, K. S. Cheng, D. O. Chernyshov, C. M. Ko and W. H. Ip A&A, 508 1 (2009) 1-7 Published online: 01 October 2009 DOI: 10.1051/0004-6361/200911833