Mass loss rates of a sample of irregular and semiregular M-type AGB-variables H. Olofsson, D. González Delgado, F. Kerschbaum and F. L. Schöier A&A, 391 3 (2002) 1053-1067 Published online: 09 August 2002 DOI: 10.1051/0004-6361:20020841