A Swedish heterodyne facility instrument for the APEX telescope V. Vassilev, D. Meledin, I. Lapkin, V. Belitsky, O. Nyström, D. Henke, A. Pavolotsky, R. Monje, C. Risacher, M. Olberg et al. (9 more) A&A, 490 3 (2008) 1157-1163 Published online: 17 September 2008 DOI: 10.1051/0004-6361:200810459