Very luminous carbon stars in the outer disk of the Triangulum spiral galaxy D. L. Block, K. C. Freeman, T. H. Jarrett, I. Puerari, G. Worthey, F. Combes and R. Groess A&A, 425 3 (2004) L37-L40 Published online: 28 September 2004 DOI: 10.1051/0004-6361:200400031