Molecular gas in the Andromeda galaxy Ch. Nieten, N. Neininger, M. Guélin, H. Ungerechts, R. Lucas, E. M. Berkhuijsen, R. Beck and R. Wielebinski A&A, 453 2 (2006) 459-475 Published online: 16 June 2006 DOI: 10.1051/0004-6361:20035672