Chemical analysis of carbon stars in the Local Group - I. The Small Magellanic Cloud and the Sagittarius dwarf spheroidal galaxyP. de Laverny, C. Abia, I. Domínguez, B. Plez, O. Straniero, R. Wahlin, K. Eriksson and U. G. JørgensenA&A, 446 3 (2006) 1107-1118DOI: https://doi.org/10.1051/0004-6361:20053423