Infrared giants vs. supergiants - II. CO observations E. Josselin, C. Loup, A. Omont, C. Barnbaum, L.-Å. Nyman and F. Sèvre Astron. Astrophys. Suppl. Ser., 129 1 (1998) 45-68 Published online: 15 April 1998 DOI: 10.1051/aas:1998396