Overabundance of α-elements in exoplanet-hosting stars V. Zh. Adibekyan, N. C. Santos, S. G. Sousa, G. Israelian, E. Delgado Mena, J. I. González Hernández, M. Mayor, C. Lovis and S. Udry A&A, 543 (2012) A89 Published online: 03 July 2012 DOI: 10.1051/0004-6361/201219564