Spectroscopic metallicities for planet-host stars: Extending the samples N. C. Santos, G. Israelian, M. Mayor, J. P. Bento, P. C. Almeida, S. G. Sousa and A. Ecuvillon A&A, 437 3 (2005) 1127-1133 Published online: 30 June 2005 DOI: 10.1051/0004-6361:20052895