A λ = 1.3 mm and 2 mm molecular line survey towards M 82 R. Aladro, S. Martín, J. Martín-Pintado, R. Mauersberger, C. Henkel, B. Ocaña Flaquer and M. A. Amo-Baladrón A&A, 535 (2011) A84 Published online: 11 November 2011 DOI: 10.1051/0004-6361/201117397